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The circumference of a circle is 15. Use the formula 646-03-07-00-00_files/i0260000.jpg to find the radius, r. Use 3.14 as an approximation for and round your answer to the nearest hundredth. a. r = 5.21 c. r = 4.78 b. r = 2.39 d. r = 3.17

Respuesta :

prestonshelton
Hello!

The equation to find the radius when you know the circumference is

[tex]r= \frac{C}{2 \pi } [/tex]

r is radius
C is circumference

Put in the values you know and 3.14 for pi

[tex]r= \frac{15}{2 * 3.14} [/tex]

Multiply

[tex]r = \frac{15}{6.28} [/tex]

Divide

r = 2.39

The answer is r = 2.39

Hope this helps!

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