Given problem;
A = 4 π R²
To solve for R, we have to make it the subject of the expression.
Since
A = 4 π R² , follow these steps to find R;
Multiply both sides by
A x
=
x 4 π R²
= R²
Then find the square root of both sides
√R² =
R = 
The solution is 
8/10, because it's double the numbers
Answer:
no clue
Step-by-step explanation:
figure it out by yourself
Answer:
NANI!?!?
Step-by-step explanation:2
POOOOOOOOOOOOOO
13
14=2•7
15=3•5
16=2•2•2•2
17
18=2•3•3
19
20=2•2•5
...