Question

Find the area of an equilateral triangle with side 14.

Answer 1

A. \[\sqrt[49]{3}\]
B. 7
C. 21
D. 147

Answer 2

So, there are a few ways to approach the problem. I'll use the area formula, \(A = bh\), and some trigonometry.
What you want to do is find the height. We know the base is already 14. We can use the fact that the altitude of an isosceles triangle from the vertex angle is also a perpendicular bisector and an angle bisector to our advantage here.