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Safari321
 3 years ago
In the diagram of the park, ADF~BCF. The crosswalk at point A is about 20 yd long. A bridge across the pond will be built, from point B to point C. What will the length of the bridge be?
Diagram in question...
Safari321
 3 years ago
In the diagram of the park, ADF~BCF. The crosswalk at point A is about 20 yd long. A bridge across the pond will be built, from point B to point C. What will the length of the bridge be? Diagram in question...

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Safari321
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1350944261807:dw

JakeV8
 3 years ago
Best ResponseYou've already chosen the best response.1Since the 2 triangles are similar, their sides are proportional. You also know AD is 20 yards, since it tells you that is the crosswalk length at A. So the proportion is 50 / 120 = 20 / BC Or if you flip it over, 120 / 50 = BC / 20 Then you can solve for BC... 120 / 50 = BC / 20 (20)(120/50) = BC

Safari321
 3 years ago
Best ResponseYou've already chosen the best response.0thanks Jake I believe the answer is 48

JakeV8
 3 years ago
Best ResponseYou've already chosen the best response.1That's correct... Glad to help :) Does it make sense? It's just a matter of setting up the proportions to match the corresponding parts of the triangles, then solving for the part you need.

Safari321
 3 years ago
Best ResponseYou've already chosen the best response.0It makes to me now :)) oh oh
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