We can solve for the 3 triangle sides.
The left side is easy 6.
Second side² = 7² + 4²
Second side² = 49 + 16
Second side = square root (65)
Second side =
<span>
<span>
<span>
8.0622577483
</span>
</span>
</span>
Third Side² = 7² + 2²
Third Side² = 53
Third Side =
<span>
<span>
<span>
7.2801098893
</span>
</span>
</span>
When we know 3 sides, we use Heron's formula for calculating area:
Perimeter =
<span>
<span>
<span>
21.3423676376
</span>
</span>
</span>
Semi-Perimeter =
<span>
<span>
<span>
10.6711838188
</span>
</span>
</span>
Using Heron's Formula
area = square root (<span>10.6711838188 * </span><span>4.6711838188 * </span>
<span>
<span>
<span>
2.6089260705
</span>
</span>
</span>
*
<span>
<span>
<span>
3.3910739295
</span>
</span>
</span>
)
area = square root (441)
area = 21
Yes, it's just that "easy". LOL
