Answer:
I think PEMDAS would be helpful for this.
Step-by-step explanation:
Answer:
d =
Step-by-step explanation:
1) To solve for d, isolate it in the equation. So, to get rid of the
with the d, add
to both sides.

Thus, d =
.
Answer:
21
Step-by-step explanation:
100 * pi = pi * r^2
Pi cancels on both sides of the equation
So... 100= r^2
= radius is 10
Answer:
sq root of 26
Step-by-step explanation:
One rule of an irrational number is that it cannot be written as an whole fraction, since the other two are fractions, the last must be irrational.