The difference between the circumference and diameter of a circle is 30 cm. The area of the circle is
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Circumference Of a circle = 2πr
Area of a circle=πr^2
According To Question
2πr - 2r= 30
2r(π-1)=30
2r(15/7)=30 [22/7 -1 =15/7]
r=(30*7)/(15*2)
r= 7cm
Area = πr^2
(22/7 )*7 *7
= 154cm^2
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