Advanced MathEasyPerimeter of an equilateral triangle
Advanced Math practice question
An equilateral triangle has sides of length x + 2. Which expression gives its perimeter?
- A. 3x + 6Correct
- B. 3x + 2
- C. x + 6
- D. 3x²
Answer: A. 3x + 6
Three sides: 3(x + 2) = 3x + 6.
Why the other answers are wrong
- B. 3x + 2
- Only the x was tripled.
- C. x + 6
- Only the 2 was tripled.
- D. 3x²
- Perimeter adds lengths; it does not square them.
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