Question

if the area of acircle is numerically equal to twice its circumference find its diameter

Answer 1

Answer:

Step-by-step explanation:

Pi*r^2=2(2*pi*r)

r=4

Diameter=8.

Answer 2

pi r^2=2(2pi r)

=pi r^2=4 pi r

r^2=4r

r=4

diameter =4*2=8cm