A tank is 30m long ,9m wide and 4m deep.what is the cost of plastering it's walls and bottom at 25 paise per sq. m?
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Hi there !!
Length = l = 30 metres
Breadth = b = 9 metres
Height = h = 4 metres
Area to be plastered = L.S.A + 1 Base area
L.S.A = 2(l+b)h
= 2(30 + 9 ) x 4
= 2 x 39 x 4 = 312 m²
1 base area = lb = 30 x 9 = 270 m²
Area to be plastered = 312 + 270 = 582 m²
Cost of plastering 1m² = 25 paise = 0.25 Rs
Cost of plastering 582 m² = 145.5 Rs
Length = l = 30 metres
Breadth = b = 9 metres
Height = h = 4 metres
Area to be plastered = L.S.A + 1 Base area
L.S.A = 2(l+b)h
= 2(30 + 9 ) x 4
= 2 x 39 x 4 = 312 m²
1 base area = lb = 30 x 9 = 270 m²
Area to be plastered = 312 + 270 = 582 m²
Cost of plastering 1m² = 25 paise = 0.25 Rs
Cost of plastering 582 m² = 145.5 Rs
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