The area of an equilateral triangle is 25√3 square units. What is the perimeter of the triangle?

✓ Correct Answer: Option C

The area of an equilateral triangle with side 's' is (√3/4)s^2. Given area is 25√3. So, (√3/4)s^2 = 25√3. Divide by √3 and multiply by 4: s^2 = 100, so s = 10. The perimeter of an equilateral triangle is 3s. Perimeter = 3 * 10 = 30 units.