Geometry and TrigonometryVery hardPerimeter of a square from its diagonal
Geometry and Trigonometry practice question
The diagonal of a square has length 8√2. What is the perimeter of the square?
Answer: 32
A square's diagonal is side × √2, so the side is 8 and the perimeter is 4 × 8 = 32.
Common wrong answers
- If you answered 16
- 16 counts two sides.
- If you answered 64
- 64 is the area.
- If you answered 45.25
- 45.25 uses 8√2 as the side.
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