Answer:
Metal barrel= 3 feet tall
Step-by-step explanation:
street sign to shadow ratio: 12/16
metal barrel to shadow ratio: ?/4
you can reduce 12/16 into 3/4 by dividing both numbers by 4.
that means that 12/16 is equal to 3/4. the street sign is 75% of its shadow, and the same would go for the metal barrel. hope thats not too confusing