Question

find the diamete of a circle whose area = 962.5 cm

Answer 1

area of triangle is πr^2
3.14×r^2=962.5
r^2=962.5/3.14
=306.528
r=√306.528
=17.507
diameter =2r
2×17.507
=35.015
35.015 is the answer.

Answer 2

area =πr^2=962.5cm
22/7×r^2=962.5
r^2=962.5×7/22
r^2=306.25
r=√306.25
$\sqrt{306.25}$