Question

The radius of a circle is 14 cm. The circle is divided into two equal parts. What is the perimeter of each semi-circular part?​

Answer 1

Radius of the circle = 14cm

$2 \: \pi \: r \\ 2 \times \frac{22}{7} \times 14cm \\ 2 \times 22 \times 2cm \\ 88cm$

Perimeter of circle = 88cm

Therefore, perimeter of each semi - circle will be

(88cm ÷ 2) = 44cm

Answer 2

Answer: 72cm

Step-by-step explanation:

Radius of the circle = 14cm

So, diameter= 14x2= 28cm

Perimeter of the semicircle= diameter+ circumference of semicircle(πr)

                                             = 28cm+(22/7 x 14cm)

                                             = 28+ 44

                                             = 72cm