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April 18, 2015

April 18, 2015

Posted by **Candice** on Friday, December 9, 2011 at 9:47pm.

Please show working out

Thank you so much!

- Math -
**Reiny**, Friday, December 9, 2011 at 10:17pmthe circumference of the original circle becomes the arc length of the sector.

circumf. of circle = 2πr = 24π

arc = rØ, were Ø is the central angle in radians and r is the radius

so if r = 60

60Ø = 24π

Ø = 24π/60 radians = 2π/5 radians

I know π/5 radians = 36° , so

2π/5 radians = 72°

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