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Question
use what youve learned about similar triangles to find the height of this building.
○ h = 5 ft
○ h = 15 ft
○ h = 20 ft
○ none of these
Step1: Establecer la proporción
Dado que los triángulos son similares, la proporción de los lados correspondientes es igual. Entonces, $\frac{5}{3}=\frac{h}{12}$.
Step2: Resolver para h
Multiplicamos ambos lados de la ecuación por 12: $h = \frac{5\times12}{3}$.
Step3: Calcular el valor de h
$h=\frac{60}{3}=20$.
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C. h = 20 ft