Points b and c lie on a circle with center o and radius r = 5 units. if the length of is 10.91 units, what is m in radians? use the value = 3.1416, and round your answer to three decimal places. a.1.667 b.2.314 c.2.182 d.2.921

The correct question in the attached figure

we know that
[the length of a circumference]=2*pi*r
for r=5 units
so
[the length of a circumference]=2*pi*5-----> 31.416 units

if 2pi radians (full circle)-------------> has a length of 31.416 units
then
 X radians-----------------------------> 10.91 units
X=10.91*2*pi/31.416---------> =2.182 radians

the answer is
2.182 radians

3x+9+4x+x=8x+9that's the answer for your question.