SOLUTION: A student says that a cube with side lengths of 5 in has a surface area of 150 in squared, or 12.5 ft squared. Explain the student's error. Give the correct answer. I do not know w
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Question 1032072: A student says that a cube with side lengths of 5 in has a surface area of 150 in squared, or 12.5 ft squared. Explain the student's error. Give the correct answer. I do not know what the answer. Please help as soon as possible. Thank you! Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! 5 * 5 = 25 * 6(sides of cube) = 150 square inches
5 inches = 5/12 = 0.416666667 approx 0.42 foot
0.42 * 0.42 = 0.1764 * 6 = 1.0584 square feet
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the student divided 150 square inches by 12 inches in a foot
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the student forgot that we are dealing with square inches not inches
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