Acone fits inside a square pyramid as shown. for every cross section, the ratio of the area of the circle to the area of the square is or . since the area of the circle is the area of the square, the volume of the cone equals the volume of the pyramid or or πrh. the volume of the pyramid or or πr2h. the volume of the pyramid or or πr2h. the volume of the pyramid or or πr2h.

B pi/4 the volume of the pyramid or pi/4 (2r)^2 (h)/3or 1/3 πr^2h.

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π/4 the volume of the pyramid or π/4(  (2r) (h) / 3 ) or1/3  πr2h.

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answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

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