3.14*r^2*10=502.4

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Solution for 3.14*r^2*10=502.4 equation: 



3.14r^2*10=502.4

We move all terms to the left:

3.14r^2*10-(502.4)=0

We add all the numbers together, and all the variables

3.14r^2*10-502.4=0

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

3.14r^2*10=502.4

r=502.4/1

r=502.4

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