Solve the problem.A sensor light installed on the edge of a home can detect motion for a distance of 
in front and with a range of motion of 
Over what area will the sensor detect motion and become illuminated? Round to two decimal places.
A. 14,894.08 ft2
B. 7,447.04 ft2
C. 14,894.18 ft2
D. 7,446.94 ft2
Answer: B
Mathematics
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Solve the equation for the indicated variable.S = 2?rh + 2?r2
for h
A. h = S - r
B. h = 
C. h = 
- 1
D. h = 2?(S - r)
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Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = sinx on 
A. 13.39 B. 7.65 C. 5.1 D. 1.15
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Find the derivative.y = 12
A. 11 B. 12 C. 0 D. 1
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Perform the indicated operation. Simplify the answer when possible.
? 
A. 
B. 
C. 7
D. 2
Mathematics