Question

A cubical box with lid has a length of 30cm . Find the cost of painting the inside and outside of the box at ₹5.50 per m2.

Answer 1

The total surface area of cube is 6a^2.
   given
   a=30
 area=6.30.30
         =5400
     cost=(5400)(5.50)
           2900
     so,probably the cost of painting is Rs.2900

Answer 2

Answer:

The cost of painting is Rs.4950.

Step-by-step explanation:

Given : A cubical box with lid has a length of 30cm.

To find : The cost of painting the inside and outside of the box at ₹5.50 per m.sq.?

Solution :

A cubical box with lid has a length of 30cm.

The area of the box is

$A=s\times s$

$A=30\times 30$

$A=900m^2$

The cost of the box per sq. meter. ₹5.50.

The cost of the box 900 sq. meter. is

$C=900\times 5.50$

$C=Rs.4950$

Therefore, The cost of painting is Rs.4950.