Question

how to find area of a triangle

where the sides are 8,7,10cm

Answer 1

by herons formula.......

Answer 2

Hey friend,
Here is the answer you were looking for:
$according \: to \: heron \: s \: \: formula = \\ \sqrt{s(s - a)(s - b)(s - c)} \\ \\ semi - circle \: = \frac{a + b + c}{2} \\ \\ s = \frac{8 + 7 + 10}{2} \\ \\ s = \frac{25}{2} \\ \\ s = 12.5 \\ \\ area \: = \sqrt{12.5(12.5 - 8)(12.5 - 7)(12.5 - 10)} \\ \\ area = \sqrt{ 12.5 \times 4.5 \times 5.5 \times 2.5 } \\ \\ area = \sqrt{773.43} \\ \\ area = 27.81 {cm}^{2} (approx)$

Hope this helps!!!

@Mahak24

Thanks...
☺