Question

find the cost of painting the four walls of a room with dimensions 10mx5mx6m at the rate of 4 per m ²

Answer 1

If

l = 10 m

b = 5 m

h = 6 m

Area of 4 wall = perimeter x height

                       = 2 ( 10 + 5 ) x 6

                       =30 x 6 = 180 m²

Cost of painting = 4 x 180 = 720

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