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12 August, 05:38

You are filling a right cylinder tank with colored sand. how much sand in cubic inches must you add to the tank with a radius of 20 inches and height of 5 inches, in order to fill the tank 4 / 7 full?

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  1. 12 August, 06:20
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    The volume for a right cylinder is V = pi r^2 h. If you are filling a 5 inch high tank 4/7 of the way full, you are filling it to a height of 20/7 inches. Using the formula, V = pi (20) ^2 (20/7). Leaving that volume in terms of pi you get a volume of 1142.86pi inches cubed. If you're not leaving it in terms of pi, multiply the pi in.
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