2(3.14)r=2(3.14)(11)=20(3.14)=20(3.14)

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Solution for 2(3.14)r=2(3.14)(11)=20(3.14)=20(3.14) equation: 



2(3.14)r=2(3.14)(11)=20(3.14)=20(3.14)

We move all terms to the left:

2(3.14)r-(2(3.14)(11))=0

We add all the numbers together, and all the variables

2(3.14)r-69.08=0

We multiply parentheses

6.28r-69.08=0

We move all terms containing r to the left, all other terms to the right

6.28r=69.08

r=69.08/6.28

r=11

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