Question

What is the perimeter of the semicircle with radius $14cm$?

• A. $72cm$
• B. $22cm$
• C. $88cm$
• D. $44cm$

Answer 1

The correct option is A $72cm$

Perimeter of the semicircle is obtained using the formula $r(\pi +2)$.

Radius $r=14cm$

So, perimeter $=14(\pi +2)$..... where $\pi =\frac{22}{7}$

$=2(22+14)=44+28=72cm$

Hence, the answer is $72cm$.