Suppose a railroad rail is 4 kilometers and it expands on a hot day by 12 centimeters in length. approximately how many meters would the center of the rail rise above the ground? the center of the rail would rise approximately nothing meters above the ground. (type an integer or decimal rounded to the nearest tenth as needed.)

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality