Question

The area of a semicircle is 32π cm square.
Work out the perimeter of the semicircle.
Give your answer in terms of π.
HELP!

Answer 1

Answer:

(πr²)/2 = 32π

πr²=32π×2

πr²=64π

r=8

perimeter of semi circle is πr=8π

Answer 2

HeyBrother

Area of circle = πr²

Area of semicirle = πr²/2

πr²/2 = 32π ( given )

r² = 32×2

r² = 64

r= 8

Now we will find its perimetre

Perimetre of semicirle = πr

we have find radius, i.e. 8

πr = π8

Answer= π8

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