3.14r^2=50.2

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Solution for 3.14r^2=50.2 equation: 


Simplifying
3.14r2 = 50.2

Solving
3.14r2 = 50.2

Solving for variable 'r'.

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

Divide each side by '3.14'.
r2 = 15.98726115

Simplifying
r2 = 15.98726115

Take the square root of each side:
r = {-3.998407327, 3.998407327}

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