If the height is 215 ft, the diameter is 21ft and its 51 pounds per cubic feet...how much does it weigh??

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If the height is 215 ft, the diameter is 21ft and its 51 pounds per cubic feet...how much does it weigh??

PLEASE HELP ME!!!!!!!

2006-10-04 11:40:29 · 4 answers · asked by Reesie 1 in Science & Mathematics ➔ Mathematics

4 answers

pi x (21/2)^2 x 215 = 74467 cubic feet
74467 x 51 = 3 797 843 pounds

2006-10-04 11:47:28 · answer #1 · answered by Warren914 6 · 0⤊ 0⤋

Find volume - volume is in cubic feet. Look up the equation for volume of the cylinder in your text.

Multiply volume by density (that lbs per cubic feet term)

2006-10-04 18:48:36 · answer #2 · answered by Mee 4 · 0⤊ 0⤋

I used my calculator and got 230265 lb.

2006-10-04 18:52:37 · answer #3 · answered by b_jugde 1 · 0⤊ 0⤋

is it a cylinder or a cone?

2006-10-04 18:47:03 · answer #4 · answered by Anonymous · 0⤊ 0⤋