The formula s= SA/6 squared gives the length of the side, s, of a cube with a surface area, SA. How much longer is the side of a cube with a surface area of 1,200 square inches than a cube with the surface area of 768 square inches?

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15-04-2018
Mathematics

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The formula s= SA/6 squared gives the length of the side, s, of a cube with a surface area, SA. How much longer is the side of a cube with a surface area of 1,200 square inches than a cube with the surface area of 768 square inches?

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hyouka hyouka · Answer 1 · 2018-04-15T20:38:02+02:00

The side of a cube with a surface area of 1,200 is 72 inches longer than a cube with the surface area of 768 square inches.

You can substitute each given number for SA in the formula s = SA/6.

s = 1,200/6
s = 200

s = 768/6
s = 128

Then, to find how much longer the side of a cube with a surface area of 1,200 than a cube with the surface area of 768 square inches, subtract the length of the side of a cube with the surface area of 768 square inches (128 inches) from the length of the side of a cube with a surface area of 1,200 square inches (200 inches).

200 - 128 = 72

The side of a cube with a surface area of 1,200 is 72 inches longer than a cube with the surface area of 768 square inches.