4r^2-81g^2=0

Solution for 4r^2-81g^2=0 equation:

Simplifying
4r2 + -81g2 = 0

Reorder the terms:
-81g2 + 4r2 = 0

Solving
-81g2 + 4r2 = 0

Solving for variable 'g'.

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

Add '-4r2' to each side of the equation.
-81g2 + 4r2 + -4r2 = 0 + -4r2

Combine like terms: 4r2 + -4r2 = 0
-81g2 + 0 = 0 + -4r2
-81g2 = 0 + -4r2
Remove the zero:
-81g2 = -4r2

Divide each side by '-81'.
g2 = 0.04938271605r2

Simplifying
g2 = 0.04938271605r2

Take the square root of each side:
g = {-0.222222222r, 0.222222222r}