If the length of each side of an equilateral triangle is

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If the length of each side of an equilateral triangle is increased by 2 unit, the area is found to be increased by 3 + √3 square unit. The length of each side of the triangle is

1. √3 unit
2. 3 unit
3. 3√3 unit
4. 1 + 3√3 unit

Correct Option: A

Using Rule 6,
Side of equilateral triangle = x units.

∴	√3	[(x + 2)² - x²] = 3 + √3
	4

∴	√3	(4x + 4) = 3 + √3
	4

⇒ √3x + √3 = 3 + √3 = √3x = 3
⇒ x = 3 units