Answer:
I am in middle school so I actually don't know the answer
The formula of the perimeter of a rectangle is 2l+2w so look at the photo
Answer:
They cost 730 all together.
Step-by-step explanation:
One the surface area of the hall is 310m^2.
so, 310 divided by 25 is 12.4, which means they need 13 tin of paint.
The cost for it is 13*10 which is 130.
For the area of the floor, it is 40*15, which is 600m^2.
Which costs 600.
So, 600+130=730.
There must be 2 lines on every plane because you need a y-axis and an x-axis.
