75=2*(3.14)*r

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Solution for 75=2*(3.14)*r equation: 



75=2(3.14)*r

We move all terms to the left:

75-(2(3.14)*r)=0



We calculate terms in parentheses: -(2(3.14)*r), so:

2(3.14)*r

We multiply parentheses

6.28r

Back to the equation:

-(6.28r)



We add all the numbers together, and all the variables

-(+6.28r)+75=0

We get rid of parentheses

-6.28r+75=0

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

-6.28r=-75

r=-75/-6.28

r=11+3.0833333333333/3.2708333333333

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