Question

24. A cuboidal room of dimensions 5m×4m×3m is to be painted and its floor to be tiled.(a) Calculate the cost of painting the four walls if 1 sq m painting costs Rs.200.(b)How many tiles are of dimensions 50cm×50cm required to tile the floor?


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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Length (/) of room = 5 m

Breadth (b) of room = 4 m

Height (h) of room = 3 m

We whitewash the four walls and the ceiling of the room

Area to be white-washed = Area of cuboid - Area of base

Area of cuboid = 2(lb + bh +1h)

= 2(lb + bh + lh)-lb

= 2(lb) + 2(bh) + 2(1h) - lb