Question

The external dimensions of an open iron box are 20cm,15cm and 12cm.if the thickness of iron is 1cm.find the volume of the iron.

Answer 1

Step-by-step explanation:

external volume =l×b×h

=(20×15×12)cubic centi meter

=3600 cubic centimeter

internal length =20-(1+1)cubic centimeter

=18cubic centimeter

internal breadth=15-(1+1)cubic centimeter

=13 cubic centimeter

internal height=12-1 cubic centimeter

internal volume =l×b×h

=18×13×13 cubic centimeter

=3042 cubic centimeter

volume of iron

= external volume -internal volume

=(3600-3042) cubic centimeter

=558 cubic centimeter