Question

Find the area of the figure.

7cm

8cm

11cm


Area is ___ square cm?

Answer 1

616cm³

Explanation:

you just need to multiply those numbers

7 x 8 x 11= 616

Answer 2

`\text{Perimeter of the triangle,}\\\\ 2s = 7 + 8 +11 =26}\\\\\\\implies s = \frac{26}2 = 13\\\\\\\text{Apply Heron's formula to find the area of the triangle,}\\\\A = √(s(s-8)(s-7)(s-11))\\\\\implies A = √(13(13-8)(13-7)(13-11))\\\\\implies A = √(780) \\\\\implies A = 27.93~~ \text{cm}^2`