Question

circumference of a semi circle ?​

Answer 1

Step-by-step explanation:

Perimeter of Semicircle

The perimeter of a semicircle is the sum of the half of the circumference of the circle and diameter. As the perimeter of a circle is 2πr or πd. So, the perimeter of a semicircle is 1/2 (πd) + d or πr + 2r, where r is the radius.

Answer 2

$\green {\boxed{\sf \red{circumference \: of \: circle = \pi {r}}^{2} }}$

$\sf \pink{circumference \: of \: semi \: circle = \frac{1}{2} \pi {r}^{2} }$

$\sf\orange{please\:mark\:as\:brainliest............}$