2. heet measuring Im? costs Rs 20. The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs 7.50 per m2 The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of Rs 10 per m' is Rs 15000, find the height of the hail. 3. (Hint: Area of the four
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The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs 7.50 per sq m.
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Length, breadth and height of a room are 5 m, 4 m and 3 m.
Area of four walls of the room =2h(l+b)
=2×3(5+4)
=6(9)
=54 sq m
Area of the ceiling =l×b
=5×4
=20 sq cm.
Total area of the four walls and the ceiling of the room
=54+20
=74 sq cm
Cost of white washing = Rs 7.50 per sq m
Total cost of white washing =74×7.50= Rs 555
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SIMILAR QUESTIONS
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The length breadth and height of a room are 6 m,4.5 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs 8 per m
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The length, breadth, and height of a room are 5m,4m and 3m respectively. Find the cost of whitewashing the walls of the room and the ceiling at the rate of Rs.7.50
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