Solve.A circular fountain has a diameter of 12 ft. Approximate the distance around the fountain. Use 3.14 for 
A. 18.84 ft
B. 37.68 ft
C. 452.16 ft
D. 75.36 ft
Answer: B
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Find the surface area of the circular solid. Unless otherwise specified, use 3.14 for ? and round your answer to the nearest tenth.If the diameter of a sphere is 20 feet, find the surface area of the sphere. Leave ? in your answer.
A. 1600? square feet B. 1200? square feet C. 800? square feet D. 400? square feet
Solve the problem.A 30-foot pole is supported by two wires that extend from the top of the pole to points that are each 15 feet from the base of the pole. Find the total length of the two wires.
A. 90 ft
B. 15
ft
C. 2250 ft
D. 30
ft
Find the future value of the ordinary annuity. Interest is compounded annually, unless otherwise indicated.R = $900, i = 9% interest compounded semiannually for 
A. $28,234.28 B. $26,157.21 C. $21,718.93 D. $48,234.28
Use the binomial formula to expand the binomial.(3x + 4)3
A. 27x3 + 108x2 + 108x + 64 B. 9x2 + 24x + 16 C. 27x3 + 108x2 + 144x + 64 D. 9x6 + 12x3 + 4096