May 2013

016 Review Problem - Mammoth Dredges Used in Panama Canal

Problem 16
Each of mammoth dredges used in digging the Panama Canal had a dipper the capacity of which was 15 cu. yd. If the height of the dipper was 10 ft. 9½ in., what was the area of the bottom?
 

017 Review Problem - Amount of water to fill the large network of city pipes

Problem 17
Assuming that a city has 400 miles of water pipes and that the average diameter of the pies is 1 ft., how much water is required to fill this entire system?
 

018 Review Problem - Volume of Stone Bridge

Problem 18
A stone bridge has three equal semicircular arches resting on four equal rectangular piers. The radius of each arch is R, the dimensions of the piers L, W, H, while the distance from the top of each pier to the top of the bridge is D. If L = 50 ft., W = 5 ft., H = 10 ft., R = 6 ft., D = 12 ft., find the number of cubic yards of material used in building the bridge.
 

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