2. 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.
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1
Answer:
surface area of rectangle =2h+(bh+hl)
=2x3+(4x3)+(3x5)
=6+12+15
=33m²
the cost of white washing the wall 1m²= Rs 7.50
the cost of white washing the wall 33m²= 7.50x33
=247.5
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Answer:
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.
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