Given (9 inches)1/2 = (0.25 yards)1/2, which one of the

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Given (9 inches)^1/₂ = (0.25 yards)^1/₂, which one of the following statements is TRUE?

1. 3 inches - 0.5 yards
2. 9 inches = 1.5 yards
3. 9 inches = 0.25 yards
4. 81 inches = 0.0625 yards

Correct Option: C

9 inches = 0.25 yards will be the right answer. Option (a) and (d) are wrong because we need to do the square root and square of not just the numbers but the units as well i.e. inches and yards can't remain the same.