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Question

Find the surface area of a sphere.
445189.PNG


A
452.16ft2
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B
455.16ft
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C
452.16 cm2
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D
455.16 m2
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Solution

The correct option is A $$\displaystyle 452.16{ ft }^{ 2 }$$
We know, surface area of sphere, $$A=4\pi r^2$$.
Given, radius, $$r=6\ ft$$.
After substituting the value in the formula we get:
Surface area of the sphere,
$$A=4\times3.14\times6^2$$
$$=4\times3.14\times6\times6$$
$$=452.16\ ft^2$$.
Therefore, option $$A$$ is correct.

Mathematics

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