Question

The diameter of the moon is approximately one fourth of the diameter of the earth. Find the ratio of their surface area.


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Answer 1

Answer:

The ratio of surface areas is 1:16.

Explanation:

Surface area of sphere = πd²

Moon = πd1²

Earth = πd2²

$\frac{d1}{d2} = \frac{1}{4}$

Ratio = ($\frac{1}{4}$)²

= $\frac{1}{16}$ or 1:16

Hence, the ratio of surface areas is 1:16.

Answer 2

Answer:

1:16

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