Question

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

Answer 1

perimeter of a semicircle is
`(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

Perimeter of semi-circle = 36 cm

Explanation:

diameter = d = 14 cm

Perimeter of semicircle = Circumference of semi-circle + diameter

=
`(1)/(2)\pi d + d`

=
`(1)/(2)*(22)/(7)*14 +14\\`

= 22 + 14

= 36 cm