Posted by Eleanna on Monday, February 20, 2012 at 8:09pm.
The Washington Monument is the tallest structure in Washington D.C. At the same time the monument casts a shadow that is about 500 feet long, a 40 foot flagpole nearby casts a shadow that is about 36 feet long. Make a sketch. Find the approximate height of the monument.

math  Ms. Sue, Monday, February 20, 2012 at 8:12pm
Use a proportion. Cross multiply and solve for x.
x/500 = 40/36

math  Eleanna, Monday, February 20, 2012 at 8:14pm
Still don't understand :/ help please.

math  Ms. Sue, Monday, February 20, 2012 at 8:18pm
x/500 = 40/36
36x = 20,000
x = 20,000 / 36
x = 555.6
The Washington Monument is about 556 feet tall.
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