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elena-s [515]
4 years ago
5

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
1 answer:
Vadim26 [7]4 years ago
8 0
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
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