Chapter E, Problem 8.4EX

To determine

To find the length of an altitude of an equilateral triangle with side length 12 units.

Answer to Problem 8.4EX

Option (d)

Explanation of Solution

Given information: A equilateral triangle having side length 12 units.

Concept used:

The height of an altitude of an equilateral triangle: $\frac{1}{2}\times \sqrt{3}\times \text{side}$

Here, side = 12 units

The height of an altitude of an equilateral triangle: $\frac{1}{2}\times \sqrt{3}\times 12=6\sqrt{3}$

Hence, The height of an altitude of an equilateral triangle is $6\sqrt{3}$