OpenStudy (anonymous):

m

5 years ago
OpenStudy (chihiroasleaf):

can you find how many degrees 40 minutes is? then use the formula to find the length of arc

5 years ago
OpenStudy (anonymous):

\[\theta = arc/radius\] and 60 minutes =360 degrees 40 minutes = 60/360 *40 degrees= 40/6 degrees

5 years ago
OpenStudy (anonymous):

\[\frac{ 40 }{ 6 }=\frac{ arc }{ 4.5 }-----arc=(40*4.5)/6= 30 inches\]

5 years ago
OpenStudy (anonymous):

@johnnyalln does dat help?

5 years ago
OpenStudy (anonymous):

almost, the only possible answers given are 3in, 4.2in, 18.8in, and 180in

5 years ago
OpenStudy (anonymous):

6*3.14=18.84 inches

5 years ago
OpenStudy (anonymous):

18.8

5 years ago
OpenStudy (anonymous):

you find the circumference of the circle with the radius as 4.5

5 years ago
OpenStudy (anonymous):

then 2/3 of that

5 years ago
OpenStudy (anonymous):

since 40 min is 2/3 of 60 min, or a full rotation

5 years ago
OpenStudy (anonymous):

i get this now! thanks for the help!

5 years ago
OpenStudy (anonymous):

welcome!

5 years ago