A painter buys 4 L 400 mL paint. He uses 2 L 320 mL of paint. The estimated amount of paint left with him is (round off to the nearest hundreds).
A man is in talks with a painter. He wants to two of his walls painted. The cost of painting is Rs10 per cm2.How much money is required by him to paint a rectangular wall of length 400 cm and breadth 900 cm and a circular wall of diameter 126 cm? [4 MARKS]