Geometry and TrigonometryEasyHeight of a kite from its string
Geometry and Trigonometry practice question
A kite is flying on a straight string 13 metres long. The end of the string on the ground is 5 metres horizontally from the point directly below the kite. How high above the ground is the kite, in metres?
Answer: 12
13² − 5² = 169 − 25 = 144, and √144 = 12.
Common wrong answers
- If you answered 8
- 8 subtracts 5 from 13 without squaring.
- If you answered 18
- 18 adds the two lengths.
- If you answered 144
- 144 is the square of the height.
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