Kite is 17.4 feet high above the ground.
Given :
Janey is holding the string in her hand 4 feet above the ground. The string is 18 feet long, and the kite is directly above a point on the ground that is 12 feet away from Janey.
Lets make a diagram using the given information
The diagram is attached below
We need to find out x that is the height of the kite 4 feet above the ground
Lets apply Pythagorean theorem
[tex]c^2=a^2+b^2\\18^2=12^2+x^2\\324=144+x^2\\324-144=x^2\\x^2=180\\x=13.4\\[/tex]
To find the height of the kite from the ground level we add 4 feet.
[tex]13.4+4=17.4[/tex]
Kite is 17.4 feet above the ground.
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