200.6=3.24*r^2

Solution for 200.6=3.24*r^2 equation:

Simplifying
200.6 = 3.24r2

Solving
200.6 = 3.24r2

Solving for variable 'r'.

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

Add '-3.24r2' to each side of the equation.
200.6 + -3.24r2 = 3.24r2 + -3.24r2

Combine like terms: 3.24r2 + -3.24r2 = 0.00
200.6 + -3.24r2 = 0.00

Add '-200.6' to each side of the equation.
200.6 + -200.6 + -3.24r2 = 0.00 + -200.6

Combine like terms: 200.6 + -200.6 = 0.0
0.0 + -3.24r2 = 0.00 + -200.6
-3.24r2 = 0.00 + -200.6

Combine like terms: 0.00 + -200.6 = -200.6
-3.24r2 = -200.6

Divide each side by '-3.24'.
r2 = 61.91358025

Simplifying
r2 = 61.91358025

Take the square root of each side:
r = {-7.868518301, 7.868518301}