a box is made up of wood which is 1 cm thick.the outer dimensions of the box are 5cm*4cm*7cm.find the volume of the wood used.
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External length of box= 5cm= L
External breadth of box= 4cm= B
External height of box= 7cm= H
Thickness= 1cm.
Internal length of box= 5- (1+1)= 3cm= l
Internal breadth of box= 4- (1+1)= 2cm= b
Internal height of box= 7- (1+1)= 5cm= h
Volume of wood used= (External volume)- (Internal volume)
Volume of wood used= (L×B×H)- (l×b×h)
Volume of wood used= (5×4×7)- (3×2×5)
Volume of wood used= 140-30
Volume of wood used= 110 cm^3.
External breadth of box= 4cm= B
External height of box= 7cm= H
Thickness= 1cm.
Internal length of box= 5- (1+1)= 3cm= l
Internal breadth of box= 4- (1+1)= 2cm= b
Internal height of box= 7- (1+1)= 5cm= h
Volume of wood used= (External volume)- (Internal volume)
Volume of wood used= (L×B×H)- (l×b×h)
Volume of wood used= (5×4×7)- (3×2×5)
Volume of wood used= 140-30
Volume of wood used= 110 cm^3.
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