Problema Solution
The perimeter of a semicircle is 41.12 feet. What is the semicircle's diameter?
Answer provided by our tutors
let
d = the diameter of the semicircle
perimeter of a semi-circle: (1/2)d * pi + d
(1/2)d * pi + d = 41.12
d((1/2)pi + 1) = 41.12
d = 41.12/((1/2)pi + 1)
pi = 3.14
d = 41.12/((1/2)*3.14 + 1)
d = 16 ft
the semicircle's diameter is 16 feet.