Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 6.25 inches tall and stand 50 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 7.5 inches from the lowest point of the cable.
A. 0.36 in.
B. 2.25 in.
C. 0.76 in.
D. 0.56 in.
Answer: D
Mathematics
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Find the area.
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Mathematics