900=3.14r^2

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Solution for 900=3.14r^2 equation: 


Simplifying
900 = 3.14r2

Solving
900 = 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.
900 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
900 + -3.14r2 = 0.00

Add '-900' to each side of the equation.
900 + -900 + -3.14r2 = 0.00 + -900

Combine like terms: 900 + -900 = 0
0 + -3.14r2 = 0.00 + -900
-3.14r2 = 0.00 + -900

Combine like terms: 0.00 + -900 = -900
-3.14r2 = -900

Divide each side by '-3.14'.
r2 = 286.6242038

Simplifying
r2 = 286.6242038

Take the square root of each side:
r = {-16.929979439, 16.929979439}

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