Tag Archives: circle

Sarin learns Perimeter, Area and Volume in school part 121 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skill of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Shapes, aerimeter and Area.

You can read posting Sarin learns Perimeter, Area and Volume in school (Math Concept) to learn the concept of volume.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about solid.

Challenge yourself with the question before look out for the given solution!!!

Upper primary school mathematics question UPQ583

The figure is made of 2 identical circles of diameter 14 cm. Find the area of the yellow region. (take π = 3.14)

 

 

 

-Click here to read the answer…>

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Sarin learns Perimeter, Area and Volume in school part 120 (Math Question)

Standard

 

The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skill of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Shapes, aerimeter and Area.

You can read posting Sarin learns Perimeter, Area and Volume in school (Math Concept) to learn the concept of volume.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about solid.

Challenge yourself with the question before look out for the given solution‼!

Upper primary school mathematics question UPQ577

The figure below is made up of 6 identical quadrants with radius 4 cm.

a.         What is the perimeter of the orange region of the figure?

b.         What is the area of the orange region of the figure?

            (Express your answer in term of π)

 

The rectangle papers are identical and the length is 3 time of the breadth.

If the total area of the figure was 648 m2, what was the length of the rectangle paper?

-Click here to read the answer…>

Sarin learns Shapes and Solids in school part 67 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Angles and Shapes.

Read the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ548

In the figure below which is not drawn to scale, EFGH is a parallelogram. O is the centre of the circle.

Find,

(a)        ∠ OFE

(b)        ∠ OHG

UPQ548-1

…Click here to go to solution…

Sarin learns Perimeter, Area and Volume in school part 112 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skill of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Shapes and Area

You can read posting Sarin learns Perimeter, Area and Volume in school (Math Concept) to learn the concept of area.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

Challenge yourself with the question before look out for the given solution‼!

Upper primary school mathematics question UPQ525

The figure below is made up of four identical small circles enclosed in a large circle. The diameter of the large circle is 84 cm. What is the total area of the orange regions?

(Take π = 22/7)

UPQ525-1

-Click here to read the answer…>

Sarin learns Shapes and Solids in school part 61 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Fraction and Shapes.

Read the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

Read also the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Portion and Fraction.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ521

Below figure is formed by two equilateral triangles and a circle. The cirlcle touches the blue triange and the points of the yellow triangle touch the circle. What is the fraction of the yellow triangle to the figure?

UPQ521-1

…Click here to go to solution…

Sarin learns Perimeter, Area and Volume in school part 108 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skill of dealing with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Shape and Area

You can read posting Sarin learns Perimeter, Area and Volume in school (Math Concept) to learn the concept of area.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

Challenge yourself with the question before look out for the given solution‼!

Upper primary school mathematics question UPQ506

The figure below, not drawn to scale, is made up of 4 identical circles and an equilateral triangle touching the points A, B and C on the circles. If the area of the triangle is 81 cm2 and the diameter of the circle is 16 cm, find the area of the blue region. (π = 3.14) Express your answer correct to 2 decimal places.

UPQ506-1

Click to read the answer…

Sarin learns Shapes and Solids in school part 40 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with Math Modeling, Math Problem Solving and Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Fraction and Shape.

 Read the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

 You can click and read the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Portion or Fraction.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ326

In the figure below, from by a hexagon overlapped with a circle, the hexagon is 11/12 filled with blue while 2/7 of the smaller circle is filled with green. The green portion is overlapped by the two shapes. What is the ratio of the overlapped portion of the figure to the unoverlaped part of the figure?

UPQ326-1

…Click here to go to solution…

Sarin’s family and Ramadan Part 11 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with Math Modeling, Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Perimeter, Area and Problem Solving.

You can read the posting on Sarin’s family and Ramadan and Sarin’s family celebrating Hari Raya Puasa in Welcome page about story of Sarin’s family during Ramadan and celebrating Hari Raya Puasa.

You shuold read the posting on Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of Area.

Challenge yourself to solve the question before look out for the given solution‼

Upper primary school mathematics question UPQ268

Fatimah’s mother decides to change the pattern design of the carpet by including the two patterns as shown in below figure. The designs are each formed by overlapping 7 circular rings of radius 10m each. The ring in the middle in both figures passes through the centres of the 6 outer rings.

 

 

 

 

 

 

 

Use the calculator value of π to find the total area of the coloured regions in both design patterns, correct to 2 decimal places.

 

…Click here to read the solution…

Sarin learns Perimeter, Area and Volume in school part 66 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire  the skill of dealing with Math Modeling, Math Problem Solving from Lower Primary School to Upper Primary School level after reading the postings. This posting is an upper primary school math question on Circle, Triangle and Area.

You can read posting Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of perimeter and area.

Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes

Challenge yourself with the question before look out for the given solution‼!

Upper primary school mathematics question UPQ261

The figure belows is making up of one circle of diameter 8cm, two identical semicircles of diameter 4 cm and an isocelete triangle. Find the area of coloured part.

 

 

 

 

 

 

…Click here to read the solution…

Sarin’s family and Ramadan Part 9 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with Math Modeling, Problem Sum from Lower Primary School to Upper Primary School level after reading the postings. This posting is an upper primary school math question on Perimeter, Area and Problem Solving.

You can read the posting on Sarin’s family and Ramadan and Sarin’s family celebrating Hari Raya Puasa in Welcome page about story of Sarin’s family during Ramadan and celebrating Hari Raya Puasa.

You shuold read the posting on Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of Area.

Challenge yourself to solve the question before look out for the given solution‼

Upper primary school mathematics question UPQ259

After tidying up the house, Fatimah’s mother sews a piece of carpet to use during Hari Raya Puasa.  The carpet has a brown outskirt with 10cm wide and fills with yellow and purple circles with identical size. A green cloth is used as the centre piece of the full carpet. The figure below showed a quarter of the carpet design. If there are 38 circles in total in a quarter of the carpet,

a) Find the outskirt area that is not covered by the circles.

b) Find the perimeter and area of the green cloth.

…Click here to read the solution…