Solve the problem.A grain silo has the shape of a right circular cylinder with a half sphere on top. It is used to store various grains (corn, wheat, etc.) sold and delivered to market. The surface area, in square feet, of a grain silo of height h and radius r, both in feet and including the area of the base, is given by the polynomial 
. How much surface area does a silo have if it has a radius of 25 ft and a height of 60 ft? Use 3.14 for ? and round to the nearest tenth of a square foot.
A. 9498.5 ft2
B. 9420.0 ft2
C. 6672.5 ft2
D. 11,382.5 ft2
Answer: D
Mathematics
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