What is the length of c e given the number line

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

Pls , the question is in the picture!

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base