Find the square root of 124.9924.

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Multiple Choice

Find the square root of 124.9924.

Explanation:
To find a square root, identify the number that, when squared, gives the original value. Here, 11.18 squared equals 124.9924 because (11 + 0.18)^2 = 11^2 + 2×11×0.18 + 0.18^2 = 121 + 3.96 + 0.0324 = 124.9924. So the square root is exactly 11.18. The other options don’t fit because their squares are far from 124.9924: 111.8^2 is about 15,000, 3.16^2 is about 9.99, and 12.49^2 is about 156.0.

To find a square root, identify the number that, when squared, gives the original value. Here, 11.18 squared equals 124.9924 because (11 + 0.18)^2 = 11^2 + 2×11×0.18 + 0.18^2 = 121 + 3.96 + 0.0324 = 124.9924. So the square root is exactly 11.18. The other options don’t fit because their squares are far from 124.9924: 111.8^2 is about 15,000, 3.16^2 is about 9.99, and 12.49^2 is about 156.0.

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