Answer :

The problem about tree shadows can be solved using ratio and proportion. The solution is as follows:

14/x = 21/18

Cross multiply the equation:

14(18) = x(21)

Solve for x:

x = (14(18))/21
x = 12 ft 

Therefore, the height of the tree is 12 feet long.

I hope it has come to your help.
kadrabeshir

Answer: 12

Step-by-step explanation:

height/shadow = height/shadow

You get

18/21 =x/14

21 divided by 14 is 1.5

18 divided by 1.5 is 12

So, the answer is 12.

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