3 years ago

A porch has the shape of a quarter circle with a diameter of 5 ft.

1 answer:

4 0

So you have a quarter circle

this area is equal so 1/4 of total area
find total area and diviby by 4

area=pi r^2
diameter=2r
diameter/2=r
diameter=5
5/2=r=2 and 1/2=2.5

equation is now
3.14 times 2.5^2
3.14 times 6.25
19.625

that is total area

now divide by 4
19.625/4=4.9 ft
round to nearest foot
5

answer is 5 ft^2

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