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OpenStudy (anonymous):
A phone company needs to know how tall a cell tower is, so it decides to use a 4 m pole and shadows cast by the sun, as shown in the diagram. Both shadows end at point B. What is the height of the tower?
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OpenStudy (anonymous):
OpenStudy (anonymous):
Well, this is a ratio problem. Since both shadows end at point B, then the towers are proportional. Start with 40:5 and reduce it to 8:1, So for ever 8 meters of the big tower, the little tower increases one. Now since the little tower is 4 meters, the big tower will be 36 meters. Makes sense?
OpenStudy (anonymous):
yes thanks
OpenStudy (anonymous):
No problem :)
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