find the area of a polygon in square units 7,13,15,7 (1 point)
To find the area of a polygon with sides of lengths 7, 13, 15, and 7, we can use Heron's formula.
First, calculate the semi-perimeter of the polygon:
s = (7 + 13 + 15 + 7) / 2 = 42 / 2 = 21 units
Next, use Heron's formula to find the area:
Area = √[21(21-7)(21-13)(21-15)]
Area = √[21(14)(8)(6)]
Area = √(1764)
Area = 42 square units
Therefore, the area of the polygon is 42 square units.