Area of a circle is Pi * radius2
The circumference of a circle is 2 * Pi * radius
C = 2 Pi r
You already know the area;
A = Pi r2
= 32 Pi
so the radius is the square root of 32. Substitute sqrt(32) into 2 Pi r to get the circumference;
C = 2 Pi sqrt(32)
= 2 Pi 4 sqrt(2)
= 8 sqrt(2) Pi
= ~ 35.5
The circumference of a circle is 2 * Pi * radius
C = 2 Pi r
You already know the area;
A = Pi r2
= 32 Pi
so the radius is the square root of 32. Substitute sqrt(32) into 2 Pi r to get the circumference;
C = 2 Pi sqrt(32)
= 2 Pi 4 sqrt(2)
= 8 sqrt(2) Pi
= ~ 35.5