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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...
 one year ago
 one year 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...
 one year ago
 one year ago

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Safari321Best ResponseYou've already chosen the best response.0
dw:1350944261807:dw
 one year ago

JakeV8Best ResponseYou've already chosen the best response.1
Since 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
 one year ago

Safari321Best ResponseYou've already chosen the best response.0
thanks Jake I believe the answer is 48
 one year ago

JakeV8Best ResponseYou've already chosen the best response.1
That'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.
 one year ago

Safari321Best ResponseYou've already chosen the best response.0
It makes to me now :)) oh oh
 one year ago
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