Question

find the area of the triangles given below ab 11cm ac 8cm bc 13 cm​

Answer 1

Step-by-step explanation:

$Semiperimeter = \frac{a + b + c }{2} \\ = \frac{11cm + 13cm + 8cm}{2} \\ = \frac{32cm}{2} \\ = 16cm \\ area \: of \: triangle = \sqrt{ s(s - a)(s - b)(s - c) } \\ = \sqrt{16(16 - 11)(16- 13)(16 - 8)} \\ = \sqrt{16(5 \times 3 \times 8)} \\ = \sqrt{16 \times 120} \\ = 1920 {cm}^{2}$