Question

if the perimeter of semicircle is 36 cm find its radius and area​

Answer 1

Answer:

perimeter =2πr+2r=36cm

or, 2r(π+1) =36

or, r(22/7+1) =18

or, 29r/7=18

or, r=(18×7) /22=63/11cm

and area=πr square

=(22×63) /(7×11)

=(9×2) =18 CM square

Answer 2

plz refer to this attachment