A Water Tank Has the Shape of a Right Circular

question 71

Multiple Choice

A water tank has the shape of a right circular cone with height 18 feet and radius 14 feet. Water is running into the tank so that the radius r (in feet) of the surface of the water is given by where t is the time (in minutes) that the water has been running. The volume V of the water is given by Find and use it to determine the volume of the water when minutes. Round to the nearest tenth.

• A)150.8 cubic feet
• B)193.9 cubic feet
• C)938.3 cubic feet
• D)2326.6 cubic feet
• E)1407.4 cubic feet

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