ok so we have
2 half circles+1/4 big circle
(2 half circles=1 whoole circle)
circumfrence=2pir or pid
r=radius
d=diameter
d/2=r
2r=d
find te circumference of small outer circles (ones with the 10 in them)
diameter=10
c=10pi
circumference of big circle, radius=10
c=2pi10
c=20pi
1/4 since 1/4 circle
20pi/4=5pi
small+big=10pi+5pi=15pi
apro pi=3.141592
47.1239
round
47.1 ft
