Answer:
The answer is Undefined (∞).
Step-by-step explanation:
The line y = 1 has a slope of 0, and the line parallel to it, for instance, y = 3, has the same slope, m1 = 0. For the slope of the line perpendicular to that parallel line is m2 = -1/m1, which is -1/0 = ∞
3 feet wide
21/7= 3
Answer: a. 46 cm
(7 + 14) × 2 + 2× 2 = 46 (cm)