Solve the problem.A heat duct in the college library has a circular cross section with a radius of 4 inches and a length of 25 feet. How much paint (in square feet) is needed to paint the duct?
A. 314 ft2
B. 628 ft2
C. 26.2 ft2
D. 52.3 ft2
Answer: D
Mathematics
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Use Simpson's Rule with n = 4 steps to estimate the integral.
A. 1
B. 
C. 2
D. 4
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Find the area of the circle.A circle with radius 3.3 ft
A. 140 ft2 B. 21 ft2 C. 34 ft2 D. 41 ft2
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Solve the equation on the interval 0 ? ? < 2?. sin ? + 
cos ? = -1
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Indicate whether the following statement is true or false. Interchanging corresponding rows and columns of a matrix changes the sign of the determinant of the matrix.
A. True B. False
Mathematics