Use the given scale factor and the side lengths of the scale drawing to determine the side lengths of the real object.
L
Scale factor: 6:1
9 in
a
12 in
b
Scale drawing
Object
O Side "a" is 2 inches long and side is 1.5 inches long.
O Side "a" is 72 inches long and side "b" is 54 inches long.
O Side "a" is 6 inches long and side "b" is 3 inches long.
O Side "a" is 18 inches long and side "b" is 15 inches long.

Need the answer ASAP I am being timed and this is my final lease someone help and I will mark as brainless!! Plzz help fast