A fountain is made up of two semicircles and a quarter circle. The diameter of the semicircles is 20ft. Find the perimeter of the fountain. Round your answer to the nearest tenth.

Guest Mar 7, 2017

#1**0 **

How do I find the perimeter C of this fountain?..

A fountain is made up of two semicircles and a quarter circle.

The diameter of the semicircles is d = 20ft. Find the perimeter of the fountain. Round your answer to the nearest tenth.

\(\large C=\frac{2d\pi}{4}+2\times\frac{d\pi}{2}=\frac{d\pi}{2}+d\pi\)

Quarter circle + two times semicircle

\(\large C=20ft\times\frac{\pi}{2}+20ft\times \pi=20ft\times\frac{3\pi}{2}\)

\(\large C=94.248ft\)

!

asinus
Mar 7, 2017