31=2(3.14)r

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Solution for 31=2(3.14)r equation:


Simplifying
31 = 2(3.14) * r

Multiply 2 * 3.14
31 = 6.28r

Solving
31 = 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.
31 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
31 + -6.28r = 0.00

Add '-31' to each side of the equation.
31 + -31 + -6.28r = 0.00 + -31

Combine like terms: 31 + -31 = 0
0 + -6.28r = 0.00 + -31
-6.28r = 0.00 + -31

Combine like terms: 0.00 + -31 = -31
-6.28r = -31

Divide each side by '-6.28'.
r = 4.936305732

Simplifying
r = 4.936305732

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