Geometry and TrigonometryEasyDiagonal of a rectangle
Geometry and Trigonometry practice question
A rectangle has sides of length 8 and 15. What is the length of its diagonal?
Answer: 17
The diagonal is the hypotenuse of a right triangle with legs 8 and 15, so it is √(64 + 225) = 17.
Common wrong answers
- If you answered 12
- 12 is the mean of the sides.
- If you answered 23
- 23 adds the sides.
- If you answered 289
- 289 is the square of the diagonal.
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