1=3.14r^2

Solution for 1=3.14r^2 equation:

Simplifying
1 = 3.14r2

Solving
1 = 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.
1 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
1 + -3.14r2 = 0.00

Add '-1' to each side of the equation.
1 + -1 + -3.14r2 = 0.00 + -1

Combine like terms: 1 + -1 = 0
0 + -3.14r2 = 0.00 + -1
-3.14r2 = 0.00 + -1

Combine like terms: 0.00 + -1 = -1
-3.14r2 = -1

Divide each side by '-3.14'.
r2 = 0.3184713376

Simplifying
r2 = 0.3184713376

Take the square root of each side:
r = {-0.564332648, 0.564332648}