# 12.5=2(pi)r

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## Solution for 12.5=2(pi)r equation:

Simplifying
12.5 = 2(pi) * r
Multiply ip * r
12.5 = 2ipr
Solving
12.5 = 2ipr
Solving for variable 'i'.
Move all terms containing i to the left, all other terms to the right.
Add '-2ipr' to each side of the equation.
12.5 + -2ipr = 2ipr + -2ipr
Combine like terms: 2ipr + -2ipr = 0
12.5 + -2ipr = 0
Add '-12.5' to each side of the equation.
12.5 + -12.5 + -2ipr = 0 + -12.5
Combine like terms: 12.5 + -12.5 = 0.0
0.0 + -2ipr = 0 + -12.5
-2ipr = 0 + -12.5
Combine like terms: 0 + -12.5 = -12.5
-2ipr = -12.5
Divide each side by '-2pr'.
i = 6.25p-1r-1
Simplifying
i = 6.25p-1r-1`

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