What fractions? I see nothing...Do you have the choices?
Answer:
92 m
Step-by-step explanation:
Use the Pythagorean theorem to find the length of the shorter side.
Let w = length of the shorter side.

The perimeter is 2l + 2w = 2(30) + 2(16) = 60 + 32 = 92 m
It would be: 567/18 = 31.5
So, she needs atleast 32 shelves....