External dimensions of a wooden cuboid are 30cm x 25cm x 20cm. If the thickness of wood is 2 cm all round.Find the volume of the wood contained in the cuboid formed.

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written 4.6 years ago by

teamques10 ★ 64k

modified 2.1 years ago by

pedsangini276 • 4.7k

jee mathematics

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1 Answer

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written 4.6 years ago by

teamques10 ★ 64k

Solution:

External length of the cuboid = 30cm

External breadth of the cuboid = 25 cm

External height of the cuboid = 20 cm

External volume of the cuboid = (30 x 25 x 20) $xm^{2}$

$= 15000 cm^{2}$

Internal volume of the cuboid = (26 x 21 x 16) $cm^{2}$

$ = 8736 cm^{2}$

Volume of wood = External volume = Internal volume

$= 15000 cm^{2} = 8736 cm^{2}$

$= 6264 cm^{2}$

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