The correct option is
A 12(c×d) sq. units
For the
ΔABC, we have
AB=a;BC=b;CA=c & d is the perpendicular from the vertex
B.
Now, we know that the area of a triangle
=12× Base× Height.
Now, here we have to select the appropriate Base and Height for the triangle.
Here, the perpendicular drawn on
AC from the vertex
B has a length
d.
⇒ Correspondingly the Base will be
AC
∴ The area of the
ΔABC
=12×d×c sq. units