9=2(3.14159)r

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Solution for 9=2(3.14159)r equation:


Simplifying
9 = 2(3.14159) * r

Multiply 2 * 3.14159
9 = 6.28318r

Solving
9 = 6.28318r

Solving for variable 'r'.

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

Add '-6.28318r' to each side of the equation.
9 + -6.28318r = 6.28318r + -6.28318r

Combine like terms: 6.28318r + -6.28318r = 0.00000
9 + -6.28318r = 0.00000

Add '-9' to each side of the equation.
9 + -9 + -6.28318r = 0.00000 + -9

Combine like terms: 9 + -9 = 0
0 + -6.28318r = 0.00000 + -9
-6.28318r = 0.00000 + -9

Combine like terms: 0.00000 + -9 = -9
-6.28318r = -9

Divide each side by '-6.28318'.
r = 1.432395698

Simplifying
r = 1.432395698

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