Solve the problem.The circumference of a tree is found to be 135 in. What is its radius?
A. 18.7 in.
B. 43.0 in.
C. 21.5 in.
D. 19.6 in.
Answer: C
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Solve the problem.The following figure shows the shape and dimensions of a small dam. Assuming the water level is at the top of the dam, find the total force on the face of the dam. 
A. 4,410,000 N B. 39,690,000 N C. 11,907,000 N D. 396,900 N
Find the extreme values of the function subject to the given constraint.
A. Maximum: 48 at 
minimum: -48 at 
B. Maximum: none; minimum: 48 at 
C. Maximum: 48 at 
minimum: 0 at 
D. Maximum: none; minimum: 0 at 
Solve the equation for the specified variable.P = 2L + 2W; solve for L
A. L = 
B. L = P - W
C. L = 
D. L = P - 2W
Translate the sentence into an equation and solve it.Twenty-four less than three times n is equal to the product of five and n. Find n.
A. 3n - 24 = 5n, n = 12 B. 24 - 3n = 5n, n = 3 C. 3n - 24 = 5n, n = -12 D. 24 - 3n = 5n, n = -3