SOLUTION: a 20-ft flagpole casts a shadow 12 ft long. how tall is a nearby building that casts a shadow 20 ft long?

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Question 834445: a 20-ft flagpole casts a shadow 12 ft long. how tall is a nearby building that casts a shadow 20 ft long?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
20-ft flagpole casts a shadow 12 ft long.
how tall is a nearby building that casts a shadow 20 ft long?
:
The relationship of the flagpole to it's shadow is the same as the building to it's shadow
:
b%2F20 = 20%2F12
Cross multiply
12b = 20 * 20
b = 400/12
b = 331%2F3 ft high