1017.36=4*3.14*r^2

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Solution for 1017.36=4*3.14*r^2 equation: 



1017.36=4*3.14r^2

We move all terms to the left:

1017.36-(4*3.14r^2)=0

We get rid of parentheses

-4*3.14r^2+1017.36=0

Wy multiply elements

-12r+1017.36=0

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

-12r=-1017.36

r=-1017.36/-12

r=84+2.7857142857143/3.5714285714286

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