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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

Text Solution

Verified by Experts

The correct Answer is:
(A) `radius=2` units
Let the radius be `r`
Given: `pi*r^2=2pir`
`rArrr(r-2)=0`
`rArrr=2` units
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