Question

metre.
5. If the perimeter is half of the area of the circle numerically then find the radius of the circle.​

Answer 1

Answer:

perimeter of circle=2πr

area of circle=πr^2

according to question

2πr=1/2 πr^2

4πr=πr^2

cancelling π

4r=r^2

4=r^2/r

4=r

thus radius =4