Question

3 of 8
The area of a circle is 16.71cm2.
Find the length of the radius rounded to 2 DP.

Answer 1

Radius = 2.31 cm

Explanation:

Area of circle = 16.71 square centimeters

`\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=(16.71)/(3.14)\\r^2=5.32\\√(r^2)=√(5.32)\\r=2.306`

Radius of circle = 2.31 centimeter