Question

What is the perimeter of the semicircle (as shown in the fig. below) with radius 21cm. A. 66cm B. 87cm C. 98cm D. 108cm

Answer 1

Answer:

108 cm

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

Here you go,

First take perimeter of a semicircle which is 22/7 x r

Here we are given radius as 21 cm so you must put formula 22/7x21 =66

Your answer is 66cm A option.

Hope you got it All the best