56.52=2*3.14*r

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Solution for 56.52=2*3.14*r equation: 


Simplifying
56.52 = 2 * 3.14r

Multiply 2 * 3.14
56.52 = 6.28r

Solving
56.52 = 6.28r

Solving for variable 'r'.

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

Add '-6.28r' to each side of the equation.
56.52 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
56.52 + -6.28r = 0.00

Add '-56.52' to each side of the equation.
56.52 + -56.52 + -6.28r = 0.00 + -56.52

Combine like terms: 56.52 + -56.52 = 0.00
0.00 + -6.28r = 0.00 + -56.52
-6.28r = 0.00 + -56.52

Combine like terms: 0.00 + -56.52 = -56.52
-6.28r = -56.52

Divide each side by '-6.28'.
r = 9

Simplifying
r = 9

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