4c^2-81f^2=0

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Solution for 4c^2-81f^2=0 equation: 


Simplifying
4c2 + -81f2 = 0

Solving
4c2 + -81f2 = 0

Solving for variable 'c'.

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

Add '81f2' to each side of the equation.
4c2 + -81f2 + 81f2 = 0 + 81f2

Combine like terms: -81f2 + 81f2 = 0
4c2 + 0 = 0 + 81f2
4c2 = 0 + 81f2
Remove the zero:
4c2 = 81f2

Divide each side by '4'.
c2 = 20.25f2

Simplifying
c2 = 20.25f2

Take the square root of each side:
c = {-4.5f, 4.5f}

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