Question

Pls help me in this question it's urgent

Answer 1

Step-by-step explanation:

Sides of triangular wall are 11m, 6m and 15m

Here a=11, b=6, c=15

$s = \frac{a + b + c}{2}$

$s = \frac{11 + 6 + 15}{2} = 16$

$area = \sqrt{s(s - a)(s - b)(s - c)}$

$area = \sqrt{16 \times 5 \times 1 0 \times 1} = 20 \sqrt{2} {m}^{2}$