Question

If 25% of a number is 100, what is the number?

Answer 1

Answer:

E. 400

Step-by-step explanation:

So this is how we set this up, and how we solve

$0.25x=100\\x=100/0.25\\x=400$

Hope this helps!

So you are solving for circumference of a quarter circle: $\frac{1}{4}2 \pi r$

r= 28

$\pi=3.14$

$\frac{1}{4}2(87.92)=\\43.96$