Answer:

Step-by-step explanation:
A ratio is a comparison of two quantities and can be written in several forms including fractions. It is most commonly written in fraction form or a:b.
To write a ratio, we count the number of each quantity we are comparing or use the variable for that quantity. We write radius:circumference. Recall, the circumference of a circle can be found using
or
.
We write r:
or r:
.
We can also write in fraction form:
or 
4Th option is correct ✔️ ✔️
It would be 3.25 because you can’t round 0.001 up
Answer:
The angle being shown is an acute angle
Step-by-step explanation: