Question

find the area and circumference of semi circle of radius 11 cm​ plz answer​

Answer 1

Answer:

Area = 189.97 cm^2

perimeter= 34.54 cm

Step-by-step explanation:

area of the circle =

$\pi {r}^{2}$

area of a semi circle in the sense half of circle i.e

$\frac{1}{2} \times \pi \: {r}^{2}$

$\frac{1}{2} \times \pi \times {11}^{2}$

π = 22/7 = 3.14

= 189.97 cm^2

Perimeter of a circle = 2πr

perimeter of a semicircle = 2πr/2

= π*r

= 3.14 * 11

= 34.54 cm

Answer 2

Answer:

See the attachment.

Step-by-step explanation: