PLEASE HELP!
An equilateral triangle has a side of length 12 inches. What is the area of the triangle, in square inches? Express your answer in simplest radical form.

Respuesta :

Answer:

[tex]36\sqrt{3}[/tex]

Step-by-step explanation:

Hi!

Since an equilateral triangle means that every side is equal, our triangle will have 12 on all sides.

To find the height of an equilateral triangle we use [tex]\frac{a\sqrt{3}}{2}[/tex].

[tex]\frac{12\sqrt{3} }{2} = 6\sqrt{3}[/tex].

So the height is [tex]6\sqrt{3}[/tex].

Now we have to solve 12 * [tex]6\sqrt{3}[/tex] ÷ 2.

[tex]12 \cdot 6\sqrt{3} = 72\sqrt{3}[/tex]

[tex]72\sqrt{3}\: \div\: 2 = 36\sqrt{3}[/tex].

Thus, the area of the triangle is [tex]\boxed{36\sqrt{3}}[/tex].

Hope this helps!