Question

Calculate the area of a circle with radius of 6cm

Answer 1

Area of a circle = $\pi r^{2}$

Radius = 6

Substitute r as 6, and you get: 

$A = \pi 6^{2}$ 

The final answer is ≈ 113.1 as 6² = 36, and 36 × π ≈ 113.1.