<PRE><B>Question 1137050</B>
the patio will form half of a cylinder that has a diameter of 8 feet and a depth of 1/3 of a foot because 4 inches = 1/3 of a foot.


the volume of a cylinder is equal to pi * r^2 * h


r is the radius and h is the height.


since the radius is half the diameter, the radius is 8 feet.


the volume of the cylinder is pi * 8^2 * 1/3 = 67.02064328 cubic feet.


half of that is 33.51032164 cubic feet.


there are 27 cubic feet in 1 cubic yard.


therefore the volume of the patio will be 33.51032164 / 27 = 1.241123024 cubic yards.


mrs. moser will need 1.24 cubic yards of concrete to the nearest 100th of a cubic yard.





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