Question

if the perimeter of the circle is 28 find the perimeter of semicircle​

Answer 1

Answer:

perimeter of circle= 2$\p\pi$r

28=2$\pi$r

14 = $\pi$r

14=(22/7)*r

(14*7)/22 = r

r = 49/11

perimeter of semi circle=

P=$\pi$r+2r

P=14 + 2(49/11)

P = 14 + (98/11)

P = (154+98)/11

P = 252/11

P=22.9090