We have to calculate how many square feet a school custodian has to wax and to choose the correct answer. A gymnasium floor is in the shape of the square ( 20 by 20 feet ). The area of the square is : A = L^2. For L = 20 ft, A = 20^2 = 20 * 20 = 400 ft^2. Answer: <span>D. 400 square feet.</span>
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C. Planet D has the greatest mass and will exert a greater gravitational force
<span>Density can be calculated and found by dividing the sample's mass by its volume. D=m/v</span>
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There are so many questions which one you don't know