Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 3 feet from the base along the axis of symmetry and the opening is 10 feet across, how deep should the searchlight be?
A. 0.5 ft
B. 6.3 ft
C. 2.1 ft
D. 8.3 ft
Answer: C
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Solve the problem, using the table.
Kevin buys a 1-year CD for $7500 that earns 7% interest compounded daily. He decides to keep the first year's interest in the account. How much is in the account at the end of the the second year?
A. $8043.76 B. $16,087.52 C. $8626.94 D. $543.76
The slant height of a cone is 11 ft, and its base has a radius of its base is 25 ft. Find the exact surface area of the cone.
Find the distance between the points on a number line.-3 and -2
A. 5 B. 1 C. -5 D. -1
Solve the problem.The radius, r, of a right circular cone can be found using the formula 
where V is the volume and h is the height. If the volume is 680 cubic inches and the height is 6 inches, what is the radius? (Use 3.14 for ?, and round your answer to the nearest tenth of an inch.)
A. 5.2 in. B. 6.0 in. C. 10.9 in. D. 10.4 in.