Question

Calculate the perimeter of a semi-circlewhose diameter is 14cm​

Answer 1

perimeter of a semicircle is $\frac{2\pi r}{2}+2r=\frac{d\pi}2 +d$

$d=14$

so, perimeter= $14\cdot\frac{22}7\cdot \frac{1}2+14=22+14=36$ cm

Answer 2

Answer:

Perimeter of semi-circle = 36 cm

Step-by-step explanation:

diameter = d = 14 cm

Perimeter of semicircle = Circumference of semi-circle + diameter

                                       = $\frac{1}{2}\pi d + d$

                                       = $\frac{1}{2}*\frac{22}{7}*14 +14$

                                       = 22 + 14

                                       = 36 cm