A letter box of dimensions 4 feet × 2 feet is painted in the front. Find the total cost of the painting, if 1 square feet costs $2.
The cost of the paint is Rs.36.50 per kg. If 1 kg of paint covers 16 square feet, how much will it cost to paint outside of a cube having 8 feet each side?
The internal dimensions of a room are 15 m x 9 x 5 M the measurement of a door in the room are 2 X 1 m find the total cost of painting the four walls of the room if the cost of painting is a 80 permit square