Mastering Circles: Area & Circumference

Mathematics
Grade 7
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A worksheet covering Circles: Area & Circumference for Grade 7 students.

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Mastering Circles: Area & Circumference

Subject: MathematicsGrade: Grade 7
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Date:

Untitled Worksheet

Grade Grade 7
A

Introduction

Review the key formulas: Circumference = 2πr and Area = πr², where r is the radius.
B

Practice Questions

Answer all questions. Show your working in the grid spaces provided.
1.
Calculate the circumference of a circle with a radius of 7 cm.
[2 marks]
2.
Find the area of a circle with a radius of 5 meters.
[2 marks]
3.
What is the circumference of a circle with diameter 12 cm?
[2 marks]
4.
If the radius of a circle is doubled, how does the area change?
[2 marks]
5.
A circle has a circumference of 31.4 meters. What is its radius? (Use π ≈ 3.14)
[3 marks]
6.
Calculate the area of a circle with diameter 10 cm.
[2 marks]
7.
A bicycle wheel has a radius of 0.35 meters. Find its circumference.
[2 marks]
8.
Estimate the area of a circle with a diameter of 14 cm.
[2 marks]
9.
A circular garden has an area of 50 m². What is the approximate radius? (Use π ≈ 3.14)
[3 marks]
10.
A coin has a diameter of 2.5 cm. Calculate its circumference.
[2 marks]
11.
A circular track has a radius of 100 meters. Find the length of the track.
[2 marks]
12.
Challenge: A circular pond has a circumference of 62.8 meters. Find its radius.
[3 marks]
13.
Real-world: A circular table has a diameter of 1.2 meters. How much length of material is needed to cover the edge (the circumference)?
[3 marks]

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Details

Created
12/30/2025
Updated
12/30/2025
Type
worksheet