Question

Find the radius of a semicircle if its perimeter is 18cm

Answer 1

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Solution :-

Perimeter of semicircle = 18 cm

Also,

Perimeter of semicircle = πr

•°•

πr = 18

22 / 7 × r = 18

r = 5.$\bar{72}$

r = 5.7 cm (Approx)

$\huge\mathbb{Hope \ this \ helps.}$

Answer 2

Hii ☺ !!


Perimeter of semi circle = 18



πR = 18



22/7 × R = 18


R = ( 18 × 7 ) / 22


R = 5.72 cm