Question

What is the total surface area of a cube if side 25 cm?

Answer 1

$\underline{ \underline{ \sf{ \maltese \: Given: - }}}$

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• Side of the cube is 25cm.

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$\underline{ \underline{ \sf{ \maltese \: To \: find: - }}}$

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• Total surface area of the cube.

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$\underline{ \underline{ \sf{ \maltese \:Solution: - }}}$

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Here we have side of the cube so to find the total surface area of the cube we will substitute the values in the formula ( Total surface area of the cube = 6a² ).

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$\qquad \sf{: \implies \: Total \: surface \: area \: of \: the \: cube \: = \: 6 {a}^{2} }$

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$\qquad \sf{: \implies \: Total \: surface \: area \: of \: the \: cube \: = \: 6 \: \times \: {(25)}^{2} }$

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$\qquad \sf{: \implies \: Total \: surface \: area \: of \: the \: cube \: = \: 6 \: \times \: 625 }$

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$\qquad \sf{: \implies \: Total \: surface \: area \: of \: the \: cube \: = \: 3750 \: cm^{2} }$

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Hence the total surface area of the cube is 3750cm².