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Question #b5f55

1 Answer

Jan 4, 2017

Assuming you mean $c = 2 π r$ $c = 2pir$ then solving for $r$ $r$ gives $r = \frac{c}{2 π}$ $r = c/(2pi)$

See full explanation below.

Explanation:

Given $c = 2 π r$ $c = 2pir$ we can solve for $r$ $r$ by dividing each side of the equation by $2 π$ $color(red)(2pi)$

$\frac{c}{2 π} = \frac{2 π r}{2 π}$ $c/color(red)(2pi) = (2pir)/color(red)(2pi)$

$c/color(red)(2pi) = (color(red)(cancel(color(black)(2pi)))r)/cancel(color(red)(2pi))$

$c/color(red)(2pi) = r$

$r = c/color(red)(2pi)$

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