A room is 9 meter long, 8 meter broad and 6.5 my high. It has one door of dimensions 2 meter × 1.5 meter and three windows each of dimensions 1.5 m × 1 m. Find the cost of white washing the walls at Rs 3.80 per sqare meter
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Step-by-step explanation:
T. S. A of room = 9 × 8 × 6.5
= 468 metre
Square
Surface area of door = 2 × 1.5
= 3 metre sq.
Surface area of 4 windows =
= 1.5 × 1 × 4
= 6 metre sq.
Area of whitewashing =
= 468 - 6 - 3
= 459 metre sq.
Therefoe cost = 459 × 3.80
= 1744.2 rupees answer
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