Mass of Earth $\approx 5.97 \times 10^{24}$ kg and mass of Moon $\approx 7.35 \times 10^{22}$ kg. The ratio…

Mass of Earth $\approx 5.97 \times 10^{24}$ kg and mass of Moon $\approx 7.35 \times 10^{22}$ kg. The ratio of Earth's mass to Moon's mass is approximately
  1. $81$
  2. $8.1$
  3. $810$
  4. $0.81$

Solution

$\dfrac{5.97 \times 10^{24}}{7.35 \times 10^{22}} = \dfrac{5.97}{7.35} \times 10^{2} \approx 0.812 \times 100 \approx 81$.

Asked in: NSO

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