Question

Find the area of four walls of a room whose lenght is 12m, breadth 10m and height 4m. ALSO FIND THE COST OF WHITE WASHING THE WALLS AT THE RATE OF RUPEES 9 per meter square

Answer 1

Area of four wall=2h(l+b)
=2×4(12+10)
=8(22)
=176m²


Cost=9×176=>rs.1584