10. Find the area of the triangle

In a triangle $ABC$ right angled at $A$, a perpendicular of length 16 units from $A$ meets the side $BC$ at $D$ at a distance of 18 units from $C$. If $AB$ $=$ 20 units, find the area of the triangle $ABC$.

 

Answer:

 

The area of the triangle $ABC$ $=$  square units.