700=3.14r^2

Solution for 700=3.14r^2 equation:

Simplifying
700 = 3.14r2

Solving
700 = 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.
700 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
700 + -3.14r2 = 0.00

Add '-700' to each side of the equation.
700 + -700 + -3.14r2 = 0.00 + -700

Combine like terms: 700 + -700 = 0
0 + -3.14r2 = 0.00 + -700
-3.14r2 = 0.00 + -700

Combine like terms: 0.00 + -700 = -700
-3.14r2 = -700

Divide each side by '-3.14'.
r2 = 222.9299363

Simplifying
r2 = 222.9299363

Take the square root of each side:
r = {-14.930838433, 14.930838433}