62.8=1/3*3.14*r^2*15

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Solution for 62.8=1/3*3.14*r^2*15 equation: 



62.8=1/3*3.14r^2*15

We move all terms to the left:

62.8-(1/3*3.14r^2*15)=0



Domain of the equation: 3*3.14r^2*15)!=0

r!=0/1

r!=0

r∈R



We get rid of parentheses

-1/3*3.14r^2*15+62.8=0

We multiply all the terms by the denominator


(62.8)*3*3.14r^2*15-1=0

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

(62.8)*3*3.14r^2*15=1

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