Question

the external dimensions of a closed wooden box are 27cm, 19cm, 11cm. If the thickness of the wooden box is 1.5cm. find the cost of box if the wood costs rupees 1.20 per cm^3 and also find the number of 4cm cubes that could be placed into the box.​

Answer 1

Given,

The external dimensions of a closed wooden box are 27cm,19cm and 11cm respectively.

As the thickness is 1.5cm , the internal length, breadth and height of the closed box are 27−2(1.5)=24cm,19−2(1.5)=16cm and

11−2(1.5)=8cm respectively.

Now, volume of wood used to make the box

= Volume with the external dimensions − Volume with the internal dimensions

=> Volume of wood used to make the box =(27×19×11)−(24×16×8)=5643−3072=2571cucm

So, cost of the wood =1.20×2571=Rs3085.2

Answer 2

Answer:

Given, The external dimensions of a closed wooden box are 27 cm, 19 cm and 11 cm respectively. As the thickness is 1.5 cm , the internal length, breadth