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Mathematics 13 Online
OpenStudy (anonymous):

Arcs

OpenStudy (anonymous):

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

how many 12 degree angles will fit in a full 360 degree circle?

OpenStudy (anonymous):

30?

jimthompson5910 (jim_thompson5910):

so if it takes 30 of those arcs to make up a full circle, then what is the circumference?

OpenStudy (anonymous):

94.2

OpenStudy (anonymous):

Right

jimthompson5910 (jim_thompson5910):

you have 30 arcs, each of length 15 cm

OpenStudy (anonymous):

450

OpenStudy (anonymous):

cm

jimthompson5910 (jim_thompson5910):

yep

OpenStudy (anonymous):

450 is the Circumference?

OpenStudy (anonymous):

i mean of point Z

OpenStudy (anonymous):

@dan815

OpenStudy (jhannybean):

If you plug in 450 into the equation, do you get the length of the arc, 15?

OpenStudy (anonymous):

yes

OpenStudy (jhannybean):

What i'm getting is 15 = (12/360) * C C = (360/12) * 15 C = 90 * 5 = 450 Crosscheck 15 = (12/360) * 450 15 = 15 \(\checkmark\)

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