kocchi
kocchi
10-11-2017
Mathematics
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choixongdong
choixongdong
10-11-2017
Area of circle = πr^2 = 25π (r = 5)
72 degrees is 1/5 of circle
so 25
π / 5 = 5π
area of triangle = 1/2 bh
area of triangle
= 1/2(5.8)(4)
area of triangle
= 11.6
area of figure = 5
π - 11.6
answer
A. (
5π - 11.6 ) ft^2
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