35=3.14r^2

Solution for 35=3.14r^2 equation:

Simplifying
35 = 3.14r2

Solving
35 = 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.
35 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
35 + -3.14r2 = 0.00

Add '-35' to each side of the equation.
35 + -35 + -3.14r2 = 0.00 + -35

Combine like terms: 35 + -35 = 0
0 + -3.14r2 = 0.00 + -35
-3.14r2 = 0.00 + -35

Combine like terms: 0.00 + -35 = -35
-3.14r2 = -35

Divide each side by '-3.14'.
r2 = 11.14649682

Simplifying
r2 = 11.14649682

Take the square root of each side:
r = {-3.33863697, 3.33863697}