SOLUTION: What is the measurement of a cube s side with a surface area of 864 square feet

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Question 430624: What is the measurement of a cube s side with a surface area of 864 square feet
Answer by Gogonati(855) About Me  (Show Source):
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Solution:Let x the measurement of cube, The surface area A of cube is
A=6x%5E2, where
x%5E2,is the area of one side, and the cube has 6 equal sides.
864=6x%5E2, divide both sides by 6
144=x%5E2
x=sqrt%28144%29
x=12
Answer: the measurement of the cube is 12 ft.