Answer:
3.14
Step-by-step explanation:
Answer:
9.09%
Step-by-step explanation:
To find percent decrease you have to use this equation:

Initial = 49.5
New = 45
Plug in and solve:

The percent decrease is 9.09%
<em>Hope this helps!!</em>
<em>- Kay :)</em>
You don't use it usually because teachers usually say use 3.14 as an approximation
Answer:
yeah pretty much
Step-by-step explanation:
Answer:
90°
Step-by-step explanation: