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Question

Find the volume of wood used to make a closed rectangular box of outer dimensions 60cm×45cm×32cm, the thickness of wood being 2.5 cm all around. Also find the capacity of the box.

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Solution

REF.Image.
outer dimensions : 60×45×32
Thickness of wood =2.5cm
l=602(2.5)=55cm
b=452(2.5)=45cm
h=322(2.5)=27cm

The capacity of the box = l×b×h=(55×40×27)cm3=59400cm3

Total volume of box =L×B×H

=(60×45×32)cm3

=86400cm3

Volume of wood used =Total volume - Actual capacity

=8640059400

=27000cm3

1151118_1201654_ans_d760917b68b84ef4bc2125195c04157f.jpg

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