A circle has an area of 25 pi cm^2 what is the diameter?

Question

need to find the diameter of a circle that has an area of 25 pi cm^2

Answer 1

A=∏*r^2

A=∏*25

r^2=25

√r^2=√25

r=5 cm

d=2*r

d=2*5

d=10 cm

Answer 2

Area of circle: A = pi * r²

r = d/2, so A = 1/4 * pi * d²

And d² = (4/pi) * A

d = 2 * √( A/pi)