SOLUTION: A circular cardboard piece is needed for the base of a volcano model. The volcano is 46 centimeters tall and has a volume of 800 cubic centimeters. Which equation can be used to fi

Algebra ->  Surface-area -> SOLUTION: A circular cardboard piece is needed for the base of a volcano model. The volcano is 46 centimeters tall and has a volume of 800 cubic centimeters. Which equation can be used to fi      Log On


   

Question 1142070: A circular cardboard piece is needed for the base of a volcano model. The volcano is 46 centimeters tall and has a volume of 800 cubic centimeters. Which equation can be used to find the area of the circular base?
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
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The equation is the "volume" equation for a cone


    %281%2F3%29%2Ah%2Ar%5E2 = 800  cubic centimeters,   or


    r%5E2 = %283%2A800%29%2F46 = 52.17


    r = sqrt%2852.17%29 centimeters = 7.22 centimeters (approximately).