00:01
Okay, so i want to find the area of a triangle with sides measuring 200, 175, and 325.
00:12
To do that, i'm going to use what we call heron's formula, because heron's formula allows me to just find the area of a triangle when given three sides.
00:26
The formula looks like this.
00:28
It's represented by a k.
00:30
It's a big square root.
00:44
Okay.
00:45
Now, let me tell you what these letters represent.
00:48
So k is the area.
00:51
S is what we call the semi -perimeter.
00:56
And the semi -perimeter we get by adding all three sides and dividing by two.
01:03
S -me means half, half the perimeter.
01:05
And a, b, and c are the side lengths.
01:12
So let's get those values for our triangle.
01:15
It doesn't matter which you make a, which you make b.
01:17
So forth.
01:18
So i'm going to let a, b, 200, b is 175, and c is 325.
01:27
First thing i need is s, my semi -parimeter.
01:31
So i want to add those three sides, and then i'm going to divide that by two...