4 x 13 = 52
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incomplete question 11 what times 13 what if inches then 11 x 13 = 143 square inches
13 feet times 12 inches per foot =156 inches
24 inches
If a cylinder has a diameter of 4 inches, then it has a radius of two inches, and the area of that circle is pi, 3.14, times radius squared which is 4 square inches, for a total of very close to 13 square inches; multiply that by the 4 inch length of the cylinder and you get 52 cubic inches.
31/4 ÷ 2 = 13/4 ÷ 2 = 13/8 = 15/8 inches