Question

The perimeter of semicircle with radius 28 cm is

Answer 1

$r = 28cm$
perimeter =
$perimeter = \pi \: r + 2r$
$= \frac{22}{7} \times 28 + 56$
$= 88 + 56$
$= 144 \: cm$
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Answer 2

PERIMETER OF SEMI CIRCLE

FORMULA

C=36/7(r)

$36 \div 7(r)$

C = 36/7(28)

c=36(4)

c=144