If the perimeter and the area of a circle are numerically equal, then the radius of the circle is
Tick the correct answer in the following and justify your choice : If the perimeter and the area of a circle are numerically equal, then the radius of the circle is
(A) 2 units
(B) pi units
(C) 4 units
(D) 7 units
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1 Answers
Let radius of the circle =r
if perimeter = area
2πr=πr²
2r =r²----(1)
if r=2
2*2 =2²
4=4
So, correct option is (A) r = 2 units
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