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 
6 x 3 is 18. y is equal to 4. 18 minus 4 is 14. The answer is 14.
I can’t see the pictures if there are any
Answer:
30
Step-by-step explanation:
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