Irene R. answered 04/30/20
BS in Mechanical Engineering and Certified math teacher for 13 years
The scale for the drawing shows that every 3 inches drawn on the picture is the same as 9 feet in real life.
Since the width is drawn at 9 inches and 9 is 3 times larger than 3, you can multiply 9 by 3 to find the actual width:
3 in = 9 in
9 ft x
3 in • 3 = 9 in
9 ft • 3 27 ft
The actual width would be 27 ft .