Topics
12. Measurement
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iGCSE (2021 Edition)

12.09 Introducing the circle

Lesson
Worksheet
Practice

Interactive practice questions

Identify the highlighted part of each circle below:

a

A circle with a green dashed line extending from the center to a point on the circle.

Radius

A

Circumference

B

Diameter

C
b

A circle with a green dashed line extending from one side of the circle, passing through the center and to the opposite side.

Circumference

A

Diameter

B

Radius

C
c

A circle with a green dashed line parallel to and outside the solid line of the circle.

Diameter

A

Circumference

B

Radius

C
Easy
< 1min

Consider the circle below:

Easy
< 1min

What is the radius of this circle?

Easy
< 1min

The table below lists the diameters and radii of circles.

Medium
< 1min
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Outcomes

0580C5.3A

Carry out calculations involving the circumference and area of a circle.

0580E5.3A

Carry out calculations involving the circumference and area of a circle.

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