Respuesta :

Answer:

a

Step-by-step explanation:

Consider the triangles to be similar, that is the the one on the left and the outer one. Then the ratios of corresponding sides are equal, that is

[tex]\frac{40}{72}[/tex] = [tex]\frac{15}{d}[/tex] ( cross- multiply )

40d = 1080 ( divide both sides by 40 )

d = 27 ft → a

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