s closed box is made up of wood which is 1cm thick. the outer dimensions of the box is 5cm×4cm×7cm. find the volume of the wood used
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External volume of wood = lbh
= 5x4x7
= 140cm^3
Internal Volume of wood = each side - thickness
= 5-1 x 4-1 x 7-1
= 4x3x6
= 72cm^3
Total volume = External volume - Internal Volume
= 140-72
= 68cm^3
Cheers!
@bhuvan_dude
= 5x4x7
= 140cm^3
Internal Volume of wood = each side - thickness
= 5-1 x 4-1 x 7-1
= 4x3x6
= 72cm^3
Total volume = External volume - Internal Volume
= 140-72
= 68cm^3
Cheers!
@bhuvan_dude
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