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Charles decides to use the method of proportions and similar
triangles to find the height of a lamppost. He measures the length of
the post's shadow and finds it is 10 feet long. Then he holds a 12-inch
ruler perpendicular to the ground and finds that it casts a 4-inch
shadow. How tall is the lamppost?
a. 2.5 ft c. 30 ft
b. 4.8 ft d. 120 ft

Respuesta :

sonixsensation

Answer:

C. 30 ft.

Step-by-step explanation:

10 = x

12 = 4

Divide by 4

1inch shadow = 3 inches height

1 inch of a shadow is 3 inches

10 feet is 120 inches

120 * 3

360 inches height = 30 ft

Consider Brainliest!
I think it might be A. Since sometimes shadows can come off longer than the actual object.

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