The formula for the circumference of a circle is C = 2r, where r is the radius and C is the circumference. The equation solved for r is r = . Find the radius of a circle that has a circumference of 16.
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the formula is 2xpiexr so,16=2x22/7xr gives us the radius 28/11 or 2.56 .
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The formula for the circumference of a circle is C = 2πr,
The equation for r is = C / [2π]
circumference = 16.
∴C / [2π] = r
∴16 / [2 * 22/7] = r
∴16 *7 / [2 * 22] = r
∴ r = 28/11 = 2.545 Aprox =2.55 ANS
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