Answer :
[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]
Area of rectangle is ~
- Length × breadth
Therefore, the are of given triangle with Length " a " cm and breadth " b " cm can be depicted as :
[tex] \qquad \sf \dashrightarrow \: a \times b[/tex]
[tex] \qquad \sf \dashrightarrow \: ab \: \: cm {}^{2} [/tex]