Question

the circumference of a circle exceeds the diameter by 30 cm find the radius of the circle​

Answer 1

Answer:

Step-by-step explanation:

Given:

Circumference of circle =Diameter of cricle +30cm

In terms of radius

2πr = 2r +30

2πr-2r=30

2r(π-1)=30

2r(22/7-1)=30

2r(22-7/7)=30

2r(15/7)=30

R=30×7/2×15

R=7cm