HELP PLEASE Use the given scale factor and the side lengths of the scale drawing to
determine the side lengths of the real object.
Scale factor: 3:1
18 in
21 in
Scale drawing
a
Object
O A. Side ais 63 inches long and side bis 54 inches long.
O B. Side a is 24 inches long and side bis 21 inches long.
O C. Side a is 18 inches long and side bis 15 inches long.
D. Side a is 7 inches long and side bis 6 inches long.