Answer:
jK is 3.7 inches long
Step-by-step explanation:
Recall that the length of the circumference of a circle of radius "R" is given by the formula:
[tex]Length=2\,\pi\,R[/tex]
which corresponds to the "arc length" with a central angle of [tex]360^o[/tex],
so we can create the following proportionality:
[tex]\frac{2\,\pi\,R}{360^o} =\frac{JK}{70^o}\\JK=\frac{2\,\pi\,R\,(70^o)}{360^o} \\JK=\frac{2\,\pi\,(3\,in)\,(70^o)}{360^o} \\JK=3.665\,\,in[/tex]
which can be rounded to the nearest tenth as: 3.7 in
