How to find the volume of a cone Practice Test

An empty tank in the shape of a right solid circular cone has a radius of r feet and a height of h feet. The tank is filled with water at a rate of w cubic feet per second. Which of the following expressions, in terms of r, h, and w, represents the number of minutes until the tank is completely filled?

A cone has a base circumference of 77_π_ in and a height of 2 ft. What is its approximate volume?

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