Question

The cost of papering the walls of a room, 20 metres square at Rs. 1.50 per square metre is Rs.1200. Find the height of the room.

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

Area of four walls=1200/1.50=800m2

Side of wall is 20m square=20m*20m

So length and breadth will be 20m and 20m

Area of four walls=2(l+b)*h

800=2(20+20)*h

800=80h

Height=10m