102.0186=3.15*r^2

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Solution for 102.0186=3.15*r^2 equation: 


Simplifying
102.0186 = 3.15r2

Solving
102.0186 = 3.15r2

Solving for variable 'r'.

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

Add '-3.15r2' to each side of the equation.
102.0186 + -3.15r2 = 3.15r2 + -3.15r2

Combine like terms: 3.15r2 + -3.15r2 = 0.00
102.0186 + -3.15r2 = 0.00

Add '-102.0186' to each side of the equation.
102.0186 + -102.0186 + -3.15r2 = 0.00 + -102.0186

Combine like terms: 102.0186 + -102.0186 = 0.0000
0.0000 + -3.15r2 = 0.00 + -102.0186
-3.15r2 = 0.00 + -102.0186

Combine like terms: 0.00 + -102.0186 = -102.0186
-3.15r2 = -102.0186

Divide each side by '-3.15'.
r2 = 32.38685714

Simplifying
r2 = 32.38685714

Take the square root of each side:
r = {-5.690945189, 5.690945189}

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