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A vertical pole casts a shadow 20 meters. At the same times, a second vertical pole 8 meters high casts a shadow 32 meters long. find, in meters, the height of the first pole.

 Feb 23, 2020
 #1
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 X : 20 where as 8 : 32

8 : 32 = 1 : 4

 

We make these ratio's into fractions...

 

1/4 = x/20

 

We use the proportion laws...

 

4x = 20

 

4x/4 = 20/4

 

x = 5

 

Thus the vertical pole's length is 20 meters

 Feb 23, 2020
 #2
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Guest  had everything correct  except the last sentence.....the height  of the first pole =   5 meters instead  of 20 meters

 

cool cool cool

 Feb 23, 2020

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