What is the area of a square with side length 8.5 units?

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Multiple Choice

What is the area of a square with side length 8.5 units?

Explanation:
Area is found by squaring the side length of a square. With a side length of 8.5 units, multiply 8.5 by 8.5. Using (8 + 0.5)^2 gives 64 + 8 + 0.25 = 72.25. So the area is 72.25 square units. As a quick check, 8.5×8.5 equals 72.25, not 64 (which would come from 8×8) or 68 (which is 8×8.5). The result 70 doesn’t come from squaring 8.5, so 72.25 is the correct area.

Area is found by squaring the side length of a square. With a side length of 8.5 units, multiply 8.5 by 8.5. Using (8 + 0.5)^2 gives 64 + 8 + 0.25 = 72.25. So the area is 72.25 square units.

As a quick check, 8.5×8.5 equals 72.25, not 64 (which would come from 8×8) or 68 (which is 8×8.5). The result 70 doesn’t come from squaring 8.5, so 72.25 is the correct area.

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