How to find the parimeter of a semicircle?


Question: How to find the parimeter of a semicircle?

(1)1/2 (╧Аd) + d or ╧Аr + 2r
(2)1/2╧Аr²
(3)1/3╧А²r
(4) none of these

Answer (1) is absolutely right answer because we know that the formula of the perimeter of semicircle is 1/2 (╧Аd) + d or ╧Аr + 2r.

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