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4 votes
a pole that is 3.3 M tall casts a shadow that is 1.22 M long at the same time a nearby Tower cast a shadow that is 50.75 M long how tall is the Tower

User Antony Ng
by
6.8k points

2 Answers

2 votes

You set this problem up as a Ratio and Proportion.

3.3/1.2=?/50.75

Cross multiply 3.3 x 50.75 then divide your answer by 1.2.

Your answer will be 139.56 M

User Rahul Mishra
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6.7k points
6 votes
Since there is no distance between the pole and the base of the tower, we can assume that the pole is at the base of the tower.
We can create a right triangles between the pole and its shadow and between the tower and its shadow as shown in the figure. Let
x be the height of the tower. Since our triangles are similar the ratio between its sides is going to be proportional, so we can establish a proportion to find
x:

(x)/(3.3) = (50.75)/(1.22)

x= ((50.75)(3.3))/(1.22)

x=137.27

We can conclude that the tower is 137.27 meters tall.
a pole that is 3.3 M tall casts a shadow that is 1.22 M long at the same time a nearby-example-1
User Sunny Bisht
by
7.0k points
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