Question

In a circle a 45° sector has an area of 32pi cm^2. what is the radius of this circle

A)16cm
B)8cm
C)32cm
D)12cm

Answer 1

Explanation:

It is given that, 45/360 * πr² = 32π

1/8 * πr² = 32π

πr² = 256π

r² = 256

r = √256

r = 16