Question

If the area of an equilateral triangle is 9root3 cm square find its side​

Answer 1

6 cms.

Explanation:

If the side of an equilateral triangle is 2x cm then its height is √3x and its base is 2x.

Area = 1/2 * base * height

9√3 = 1/2 * 2x * √3x

9√3 = x * √3x

9 = x^2

x = 3

So length of each side = 2*3 = 6.

x = 9