Question

Round to the nearest hundredth. I need to be walked through the steps :)

Answer 1

It's 45 because they are congruent. If the vertex is in the center of a circle then the angle and the arc are congruent

Answer 2

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

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