A circle has radius 0.3 mi. and an arc of length 0.15 mi. What is the measure of the central angle in radians?(1 point) 2 radians 0.5 radian 0.045 radian 2.2 radians

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.