Question

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The area of a circle is 99.88cm?.
Find the length of the radius rounded to 2 DP.
r =
cm

Answer 1

r = 5.63 cm

Explanation:

Given that,

The area of a circle, A = 99.88 cm²

We need to find the radius of the circle. We know that, the area of a circle is given by :

`A=\pi r^2\\\\r=\sqrt{(A)/(\pi)} \\\\r=\sqrt{(99.88)/(\pi)} \\\\r=5.63\ cm`

So, the radius of circle is 5.63 cm.