Question

If A is the area and C is circumference of a circle. Then it's radius is

Answer 1

Step-by-step explanation:

area A=πr^2

perimeter=2πr

πr^2=π×r×r

p/2=πr

p/2×r=Area

r=2area/perimeter

Answer 2

Answer:

Step-by-step explanation:

area A=πr^2

perimeter=2πr

πr^2=π×r×r

p/2=πr

p/2×r=Area

r=2area/perimeter