Question

please help friends​

Answer 1

mark as brainlist answer please

i hope you understand the mathod of explanation

i wannna to explain only method not the right ans.

Answer 2

Steps:

1) find vector(AB) and vector(AC)

2)find AB×AC.

3) find (1/2)|AB×AC|

There is alternate method too. But invalid for boards I guess.

1) fing AB, AC, BC

2) find |AB|, |AC|, |BC|. These are lengths of three sides of triangle.

3) now use heron's formula to find area.