Question

the walls amd ceiling of the room is 7m long 5m wide and 3.5m wide are covered with paper 6dm wide.find the lenght of paper required,if no lenght is less than a metere can be bought

Answer 1

If a room is 6m long, 5m wide and 3m high, and the walls and ceiling are to be painted, but not the door and windows, what is the area to be painted?

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13 ANSWERS



Opendi Cornelius Gwoke, Mathematics Enthusiast

Answered Jan 10, 2017

Area of the ceiling: 6*4.5 = 27 square meters

Area of longer wall: 6*4=24 square meters

There are 2 longer walls. So the total area of the longer walls is 24+24=48 square meters.

Area of shorter wall: 4.5*4 = 18 square meters 
 
Again, there are 2 shorter walls. So the total area of the shorter walls is 2*18=36 square meters. 
 
Add up the individual areas to get: 27+48+36=111 
 
So the total area of the ceilings and the 4 walls is 111 square meters. 
 
Now we need to subtract off 14 square meters (since we're NOT going to paint over the windows or the doors) to get 111-14 = 97 
 
So the total area to be painted is 97 square meters.