GATE AG 2018 • Q4 MCQ • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Data Interpretation

Question Statement:

The area of an equilateral triangle is √3. What is the perimeter of the triangle?

Options:

  • (A) 2
  • (B) 4
  • (C) 6
  • (D) 8

Official Answer Key:

C

Step-by-Step Solution & Explanation

Area of an equilateral triangle of side a: A = (√3/4)a². (√3/4)a² = √3 ⇒ a² = 4 ⇒ a = 2 units. Perimeter = 3a = 3 × 2 = 6 units. Distractor (A) = a itself; (B) mistakes the formula as (√3/2)a².

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