Question

Find find the diameter of a circle whose circumference is 66 m

Answer 1

as circumference is 2 ×pie×r
66=2×22/7r
find value of r and then
using the formula
diameter =22radius
u will get ur ans
hope it helps..

Answer 2

2πr^2=66
r^2=21/2
r=√(21/2)
d=2r
=2{√(21/2)}