AREA OF A TRIANGLE
Given
- Length 1 (a) = 8 cm
- Length 2 (b) = 11 cm
- Length 3 (c) = 15 cm
- Area (A) = ?
Find the semi-perimeter of the triangle.
s = (a + b + c) / 2
s = (8 + 11 + 15) / 2
s = 34 / 2
s = 17 cm
Use the Heron's Formula to determine the area of the triangle.
A = √s(s - a)(s - b)(s - c)
A = √17(17 - 8)(17 - 11)(17 - 15)
A = √(17)(9)(6)(2)
A = √1836
A = 42.85 cm²
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