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Total Surface Area of a cube

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Question

Find the total surface area of cubes having the following sides.
$7.2 m$

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Solution

Given TSA of cube $= 6 a^{2}$ .
Given side of cube $= 7.2 m$
then
$T S A = 6 \times (7.2)^{2}$
$T S A = 311.04 c m^{2}$

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