The perimeter of an equilateral triangle is 36√3 cm. Find its height.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 18cm
Perimeter = 36√3
Side of the triangle = 12√3
Height of an equilateral triangle = (√3/2) × a
Thus, height = (12√3 × √3)/2 = 6 × 3 = 18