Question

I need help please, I have no idea what to do, my brain's dead​

Answer 1

Hope you could understand.

If you have any query, feel free to ask.

Answer 2

width = 6 units

length = 18 units

Explanation:

P=2(l+w)

P=2(3w+w)

48=6w+2w

8w=48

w=6

width is therefore 6units and length 3w = 18units