Question

The internal measures of a cuboidal room are 12m×8m×3m.find the total cost of whitewashing all four walls of a room,if the cost of whitewashing is Rs 8 per m.sq what will be the cost of whitewashing if the ceiling of the room is also white washed ?with step by step explanation ​

Answer 1

The dimensions of room is 12×8×4

The Lateral surface area is 

2h(l+b)

2(4)(12+8)

8×20=160m2

Cost of white wash is 5m2

Total cost is 5×160=800Rs,

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