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2*3.14*r=0
We simplify the equation to the form, which is simple to understand
2*3.14*r=0
Simplifying:
+6.28*r=0
Simplifying:
+6.28r=0
We move all terms containing r to the left and all other terms to the right.
+6.28r=0
We simplify left and right side of the equation.
+6.28r=0
We divide both sides of the equation by 6.28 to get r.
r=0
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