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CanadaON
Grade 7

9.08 The area of a circle

Interactive practice questions

The formula for the area of a circle is
$A=\pi r^2$A=πr2
where $A$A is the area and $r$r is the radius.

Consider the circle below:

a

What is the exact area of the circle?

b

What is the area of the circle rounded to two decimal places?

Easy
2min

A circle has a radius of $4$4 mm.

Easy
< 1min

A circle has a radius of $12$12 mm.

Easy
1min

A circle has a radius of $47$47 cm.

Easy
1min
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Outcomes

7.E2.5

Show the relationships between the radius, diameter, and area of a circle, and use these relationships to explain the formula for measuring the area of a circle and to solve related problems.

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