Question

The cost of papering the four walls of a room, 12 m long at 6.50 per square metre is
1638 and the cost of matting the floor at * 3.50 per square metre is 378. Find the height
of the room.
imensions of a field are 15 m x 12 m. A pit​

Answer 1

Step-by-step explanation:

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ANSWER

length of room (l)=12m

area of floor =l×b=12×b

Total cost of matting floor =12×b×3.50=378

42b=378

b=9m

Area of walls of the room =2h(l+b)

=2h(12+9)

=42hm

2

Total cost of papering walk =42h×6.50=1638

273h=1638

h=6m.