1020=12*3.14r^2-432*3.14

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Solution for 1020=12*3.14r^2-432*3.14 equation: 



1020=12*3.14r^2-432*3.14

We move all terms to the left:

1020-(12*3.14r^2-432*3.14)=0

We get rid of parentheses

-12*3.14r^2+1020+432*3.14=0

We add all the numbers together, and all the variables

-12*3.14r^2+2376.48=0

Wy multiply elements

-36r+2376.48=0

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

-36r=-2376.48

r=-2376.48/-36

r=66+0.48000000000002/36

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