geometry
posted by Piggy on .
A cone with a diameter of 7.2 meters and slant height of 8.8 meters is being filled with water at a rate of 2.5 m^3 per minute. How many minutes will it take to fill the cone?

We need the perpendicular height, not the slant height
h^2 + 3.6^2 = 8.8^2
h^2 = 64.48
h= √64.48
Volume = π(3.6)^2 (√64.48)
time to fill = π(12.96)√64.48 /2.5 = appr 130.78 minutes 
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