Question

A 5.6 feet tall person is standing 30 feet away from a street light that is 20 feet tall. How long is her shadow?

Answer 1

Answer:

Step-by-step explanation:

In fig. DE||BC. (Both are perpendiculars to AB)

Thus, in∆s ADE & ABC

<A= <A (common)

<ADE= <ABC (each 90)

∆ADE~∆ABC ( AA similarity)

x/x+30 = 5.6/20

20x=5.6x *168

14.4x = 168

x = 168/14.4

=11.67 ft

Answer 2

11*2/3 ft

11.66666ft

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