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The area of a square piece of cardboard is 81 square inches. What is the length of the cardboard? A. 10 inches B. 9 inches C. 8 inches D. 20.25 inches
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The area of a square piece of cardboard is 81 square inches. What is the length of the cardboard? A. 10 inches B. 9 inches C. 8 inches D. 20.25 inches
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Dec 25, 2019
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The area of a square piece of cardboard is 81 square inches. What is the length of the cardboard? A. 10 inches B. 9 inches C. 8 inches D. 20.25 inches
Mathematics
high-school
Sam Firke
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The answer is
B. 9 inches
because a square has 4 equal sides. The area of a square equals length times width...
So that means all 4 sides are 9 inches
9x9=81
Schleir
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Dec 31, 2019
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Schleir
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