22*3.14=2*3.14*r

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Solution for 22*3.14=2*3.14*r equation:


Simplifying
22 * 3.14 = 2 * 3.14r

Multiply 22 * 3.14
69.08 = 2 * 3.14r

Multiply 2 * 3.14
69.08 = 6.28r

Solving
69.08 = 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.
69.08 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
69.08 + -6.28r = 0.00

Add '-69.08' to each side of the equation.
69.08 + -69.08 + -6.28r = 0.00 + -69.08

Combine like terms: 69.08 + -69.08 = 0.00
0.00 + -6.28r = 0.00 + -69.08
-6.28r = 0.00 + -69.08

Combine like terms: 0.00 + -69.08 = -69.08
-6.28r = -69.08

Divide each side by '-6.28'.
r = 11

Simplifying
r = 11

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