Question

A circle has a radius of 9 cm.

Work out the area of the circle.
Give your answer in terms of pi.

Answer 1

254.469 cm

Explanation:

area = πr^2

π × 81 = 254.469005 rounded to 254.469 cm

in other terms, 81π cm^2

Answer 2

Radius = 9cm

So,

Area of circle = πr²

= π(9)²

= π × 81 cm²

= 81π cm²