907.46=r^2*3.14

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Solution for 907.46=r^2*3.14 equation: 


Simplifying
907.46 = r2 * 3.14

Reorder the terms for easier multiplication:
907.46 = 3.14r2

Solving
907.46 = 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.
907.46 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
907.46 + -3.14r2 = 0.00

Add '-907.46' to each side of the equation.
907.46 + -907.46 + -3.14r2 = 0.00 + -907.46

Combine like terms: 907.46 + -907.46 = 0.00
0.00 + -3.14r2 = 0.00 + -907.46
-3.14r2 = 0.00 + -907.46

Combine like terms: 0.00 + -907.46 = -907.46
-3.14r2 = -907.46

Divide each side by '-3.14'.
r2 = 289

Simplifying
r2 = 289

Take the square root of each side:
r = {-17, 17}

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