Question

Why is perimeter of semicircle is (π+2)×r but not πr i.e. half of the perimeter of circle (2πr) ??
Please answer as soon as possible !!

Answer 1

hence perimeter of semicircle is πr+2r but not πr

Answer 2

Because in semi circle,diameter also exists so it will be

2x pi x r/2 + 2r {since d=2r}

=> pi x r + 2r

=>r(2 + pi) {by taking r common}