Question #b5f55

1 Answer
Jan 4, 2017

Assuming you mean c = 2pir then solving for r gives r = c/(2pi)

See full explanation below.

Explanation:

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

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)