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If s denotes the length of the arc of a circle of radius r subtended by a central angle 0, find the missing quantity.

r = 14.8 inches, 0 = 315°, s = ?

 May 27, 2020
 #1
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The circumference of a circle is 2*pi*r, so the circumference is 29.8pi.

A 315 degree angle is 315/360=7/8 of the way around the circle.

Therefore, the length of s is 29.8pi*7/8=26.075pi, or about 81.917 units.

 

You are very welcome!

:P

 May 27, 2020
 #3
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no bueno, amigo!!!

Guest May 28, 2020
 #2
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If s denotes the length of the arc of a circle of radius r subtended by a central angle 0, find the missing quantity.

r = 14.8 inches, 0 = 315°, s = ?

 

s = [(2r*pi) / 360 ] * 315          s = 81.36724973  smiley

 May 28, 2020

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