Question

Difference between the circumference and diameter is 30cm. Find the area of circle

Answer 1

Step-by-step explanation:

circumference = 2πr

diameter = 2r

a/q

2πr-2r = 30

2r(π-1) = 30

2r(22/7-1) = 30

2r*(15/7) = 30

2r = 30*(7/15)

2r = 2*7

2r = 14

r = 7cm

area of circle = πr^2

= (22/7)*7*7

= 22*7

= 154cm^2

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