Find the square of rational number- 7 - 7- 428 - 14

The correct option is D 14 Square of rational numbers = (7 × 7× 428 × 14)^2 = 49 × 49× 16784 × 196 = 7 × 7× 428 × 14 = 14 ...

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Byju's Answer

Standard VII

Mathematics

Comparison of Rational Numbers

Find the squa...

Question

Find the square of rational number: $\frac{7 \times 7 \times 4}{28 \times 14}$

\frac{3}{4}

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\frac{1}{5}

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\frac{5}{4}

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\frac{1}{4}

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Solution

The correct option is D $\frac{1}{4}$
Square of rational numbers = $(\frac{7 \times 7 \times 4}{28 \times 14})^{2}$
= $\frac{49 \times 49 \times 16}{784 \times 196}$
= $\frac{7 \times 7 \times 4}{28 \times 14}$
= $\frac{1}{4}$

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Similar questions

$Name the multiplication property of rational numbers shown below: (i) \frac{3}{5} \times \frac{- 8}{9} = \frac{- 8}{9} \times \frac{3}{5} (i i) \frac{- 3}{4} \times (\frac{5}{7} \times \frac{- 8}{15}) = (\frac{- 3}{5} \times \frac{5}{7}) \times \frac{- 8}{15} (i i i) \frac{4}{5} \times (\frac{3}{- 8} + \frac{- 4}{7}) = \frac{4}{5} \times \frac{3}{- 8} + \frac{4}{5} \times \frac{- 4}{7} (i v) \frac{- 7}{5} \times \frac{5}{- 7} = 1 (v) \frac{8}{- 9} \times 1 = 1 \times \frac{8}{- 9} = \frac{8}{- 9} (v i) \frac{- 3}{4} \times 0 = 0$