What is the area of an equilateral triangle with a side length of 12 inches?
1 Answer
Mar 2, 2018
The area is about 62.4 inches (squared)
Explanation:
You can use Pythagorean theorem in order to find the height of the triangle.
First, split the triangle into two identical right-angled ones, which have the following dimensions:
H = 12in. X = 6in. Y = ?
(Where H is the hypotenuse, X is the base, Y is the height of the triangle.)
Now we can use Pythagorean theorem in order to find the height.
b = 10.39in.
Using the formula for a triangle's area,
= 62.35
= 62.4 inches