Question

perimeter of a semicircle is 36 CM then find its radius

Answer 1

perimeter of a semicircle=2πr/2=πr
so 36=3.142857*r
therefore r=36/3.142857=11.454(approximate)
I HOPE IT WILL HELP YOU.

Answer 2

perimeter of a semi circle=pi*r
perimeter of the semi circle =36cm
pi=22/7
let radius to be x
then , 22/7*x=36cm
then,x=36/22/7
then,x=36*7/22
then,x=126/11cm

therefore,radius of the semi circle is 126/11cm

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