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Simplifying 9 = (pi) * r2 Multiply ip * r2 9 = ipr2 Solving 9 = ipr2 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-1ipr2' to each side of the equation. 9 + -1ipr2 = ipr2 + -1ipr2 Combine like terms: ipr2 + -1ipr2 = 0 9 + -1ipr2 = 0 Add '-9' to each side of the equation. 9 + -9 + -1ipr2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1ipr2 = 0 + -9 -1ipr2 = 0 + -9 Combine like terms: 0 + -9 = -9 -1ipr2 = -9 Divide each side by '-1pr2'. i = 9p-1r-2 Simplifying i = 9p-1r-2
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