A closed box is made up of wood which is lcm thick.The outer dimensions of the
5 cm x 4 cm x 7 cm. Find the volume of the wood used.
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Answer:
dimension of outer side
length 5cm
breadth 4cm
hight7cm
therefore its volume =l×b×h
5×4×7=140cm^3
again
inner dimension are
length 5-2=3
breadth 4-2=2
height 7-2=5
therefore its volume=3×2×5=30çm^3
now volume of wood used=external dimensions -
internal dimensions
140-30=110cm^3
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