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Mathematics 18 Online
OpenStudy (anonymous):

@jim_thompson5910 First question.

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

ok we are given the area of the entire clock (ie the entire largest circle)

jimthompson5910 (jim_thompson5910):

that is 50.24

jimthompson5910 (jim_thompson5910):

what is the radius of the clock?

OpenStudy (anonymous):

R= 3.999 To find the length: 3.999-0.25= 3.749

jimthompson5910 (jim_thompson5910):

so that is the length of the minute hand

jimthompson5910 (jim_thompson5910):

r = 3.749 the angle from 3 to 7 is found like this 7-3 = 4 4/12 = 1/3 360 degrees times (1/3) = 360*1/3 = 360/3 = 120 degrees

jimthompson5910 (jim_thompson5910):

so you have to find this arc length here |dw:1414982949649:dw|

OpenStudy (anonymous):

What formula though?

jimthompson5910 (jim_thompson5910):

well imagine we have this full circle |dw:1414983050280:dw|

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