Question

The outer dimension of closed box are 25 cm, 30 cm and 20 cm. The box is made up of wood of thickness 3 cm ,determine the volume of wood used.

Answer 1

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internal dimensions:

22×27×17

volume=10098 cm^3


external dimensions:

25×30×20=15000cm^3





volume=15000-10098=4902cm^3


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Answer 2

$\textbf {Answer -}$

External volume =

$25 \times 30 \times 20 = {15000}^{3}$

Internal volume =

$(25 - 3) \times (30 - 3) \times(20 - 3) = {10098}^{3}$

Volume = external - internal

$\textbf {4902 \: cm}^{3}$