Question

If colsed box is made up of wood 1cm thick the out dimension of the box is 5cm×4cm×7cm.Find the volume of the used wood

Answer 1

hey dude ........
ur answer is here........!!!!!

***First we will find the area of the box from outside and then the area of the box from inside the box.
Then we can subtact the two values and find the volume of the wood used.

Volume of the box from outside
= 5cm x 4cm x 7cm
= 140 cubic.cms

The wood is 1cm thick so,

Volume of the box from inside
= 4cm x 3cm x 6cm
= 72 cubic.cms

Volume of wood used
= Volume of the box from outside -
Volume of the box from inside
= 140 - 72
= 68 cubic.cms


thanks... ...!