A storage room is 6m long, 5m wide and 3.5m high. Find the cost of white-washing its walls at the rate of 12$per m sq
This chapter is volume and surface area, 7th grade
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Length of room =6m
Breadth of room =5m
Height of room =3.5m
So, Area of four walls =2(+b)×h=2(6+5)×3.5=77m2
Hence, the cost of whitewashing =Rs.(12 × 77)=Rs.264
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Answer:
6m × 5m × 3.5m = 105m
₹12 × 105m = ₹1260
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