" 1.Wall paints are always in liquid form."

Grills of doors and windows are always painted before they are used. Give reason

Give scientific reasons Grills of doors and windows are always painted before they are used.

Narendra painted 2/3 area of the wall in his room. His brother Ritesh helped and painted 1/3 area of the wall. How much did they paint together ?

Walls (excluding their roofs and floors) of 5 identical rooms having length, breadth and height 6 m, 4 m and 2.5 m respectively are to be painted. Paints are available only in cans of 1 L and one litre of paint can be used for painting 20 square metres. What is the number of cans required for painting ?

12 painters can paint a wall of 180 m long in 3 days. How many painters are required to paint 200 m long wall in 5 days?

Ramkumar wanted to paint the walls and ceiling of a hall. The dimensions of the hall is 20m xx 15m xx 6m . Find the area of surface to be painted and the cost of painting it at Rs.78 Per sq.m.