It is a acute I think that is the answer I am in 7th grade so I don’t really know
Answer:

Step-by-step explanation:
Given

Results:


Required
Ratio of students not participating to all students
Students not participating are represented with 0;
So, we have:

The ratio is then calculated as:


Divide by 4

First, find the area of each of the prisms sides
5 by 5.5 = 27.5
3 by 5.5 = 16.5
4 by 3 cut in half = 6 (theres 2 of thoses so 12)
4 by 5.5 = 22
Add up the products and the surface area is 78 units
Post brainliest if this helped :)
Remember, the word "of" indicates multiplication, and the word "is" indicates equality. Rewrite this to say;
x60=48
Divide by 60 on both sides
x=48/60
x=4/5