Question

A circumference of a circle exceeds the diameter by 20cm. Find the radius of the circle

Answer 1

Answer:

14/3

Step-by-step explanation:

circumference of circle= daimeter +20

2 pi r = 2r + 20

2 pi r - 2r = 20

r(2pi - 2) = 20

r(pi-1) = 10

r= 70/15

r= 14/3