How are circles and their related geometric figures defined?

1234567891011 match the reasons with the statements in the proof. given: j | | k m 1 = m 3 prove: l | | m 1. j||k, m∠3 = m∠1 if lines are ||, then corresponding angles are =. 2. m∠1 = m∠2 if alternate interior angles are =, then lines are ||. 3. m∠2 = m∠3 substitution 4. l||m given

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?