Question

Find the perimeter of a semi-circle of radius 7 cm. (π = 22/7)

Answer 1

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Answer 2

$It \: is \: \frac{2\pi \: r}{2} + 2r = \pi \: r + 2r, \: as \: r = 7 \: cm$

$Perimeter of semicircle = π \times 7 +2 \times 7 cm$

$=> \frac{22}{7} \times 7 + 14 \: cm$

=> 36 cm

( considering value of π =22/7)