2(3.14r)=20

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Solution for 2(3.14r)=20 equation: 


Simplifying
2(3.14r) = 20

Remove parenthesis around (3.14r)
2 * 3.14r = 20

Multiply 2 * 3.14
6.28r = 20

Solving
6.28r = 20

Solving for variable 'r'.

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

Divide each side by '6.28'.
r = 3.184713376

Simplifying
r = 3.184713376

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