34=r^2*3.14

Solution for 34=r^2*3.14 equation:

Simplifying
34 = r2 * 3.14

Reorder the terms for easier multiplication:
34 = 3.14r2

Solving
34 = 3.14r2

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-3.14r2' to each side of the equation.
34 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
34 + -3.14r2 = 0.00

Add '-34' to each side of the equation.
34 + -34 + -3.14r2 = 0.00 + -34

Combine like terms: 34 + -34 = 0
0 + -3.14r2 = 0.00 + -34
-3.14r2 = 0.00 + -34

Combine like terms: 0.00 + -34 = -34
-3.14r2 = -34

Divide each side by '-3.14'.
r2 = 10.82802548

Simplifying
r2 = 10.82802548

Take the square root of each side:
r = {-3.290596523, 3.290596523}