Question

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.​

Answer 1

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