Round to the nearest hundredth.

i need to be walked through the steps : )

To solve this, you'll need the arc length formula for degrees:
2*radius(C/360)
(C is "central angle")

2*radius is the circumference of the entire circle, 360 is a full angle, so this formula gives you the ratio of full circumference/full angle to the angle and arc length you have.

2*7(45/360) = 5.497
= 5.50 to the nearest hundred.

Ithink the answer is b.