9514 1404 393
Answer:
60 feet
Step-by-step explanation:
We always assume that the shadow length is proportional to the height of the object casting the shadow. So, we have ...
height/shadow = b/(72 ft) = (5 ft)/(6 ft) . . . let b represent the unknown height
b = (72 ft)(5/6) = 60 ft . . . . . multiply by 72 ft
The building is 60 feet tall.
