It’s C. It just need the 1 over lapping of each other
For this problem all we need to do is ignore everything except the equation and the input (5.5)
so the steps for this problem are below
we need to plug in 5.5 into our equation as it's our input of time to get our output of height

after simplifying you get
remember to square the 5.5 first (order of operations)

simplify just a tad more and we get this as the final answer

Do you have any answer choices?
Answer:
Step-by-step explanation:
Width =w
Length = w + 6
Perimeter of rectangular room = 54 m
2*(length +width ) = 54
2*(w +6 + w) = 54
2*(<u>w +w</u> + 6) = 54 {Combine like terms}
2*(2w + 6) = 54
Use distributive property
2*2w + 2*6 = 54
4w + 12 = 54
Subtract 12 form both side
4w = 54 - 12
4w = 42
Divide both sides by 4
w = 42/4
w = 10.5 m
Length = 10.5 + 6 = 16.5 m
Length = 16.5 m
Width = 10.5 m
777 divided by 42 is... 18.5
555 divided by 42 is... 13.21