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
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Area of four wall=2h(l+b)
=2×4(12+10)
=8(22)
=176m²
Cost=9×176=>rs.1584
=2×4(12+10)
=8(22)
=176m²
Cost=9×176=>rs.1584
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