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Total Surface Area of a cube

Find the surf...

Question

Find the surface area of a cube in square inches, whose each edge measures $3$ inches.

A

9

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B

18

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C

27

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D

36

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E

54

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Solution

The correct option is E 54
Surface area of cube $= 6 a^{2}$
Where ' $a$ ' is the edge of the cube
Surface area $=$ $6 \times (3)^{2}$
$\Rightarrow 6 \times 9 = 54$ square inches

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