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

what is the approximate area of the porch, rounded to the nearest square foot? use 3.14 to approximate .

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

Logical equivalent of the give question is its contrapositive