Question

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

Answer 1

Answer:

7 cm

Step-by-step explanation:

Let 2πr=2r+30  then on solving,

2r (22/7 - 1) = 30

r = 30(7)/2(15) = 7

Answer 2

Answer:

7cm.

Step-by-step explanation:

Let 2πr=2r+30

now,

2*22/7*r=7*2r+30

=>44r=14r+210

=>44r-14r=210

=>30r=210

=>r=210/30

So, r= 7cm.