L×b is the answer
A = L×B
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The area of a triangle is length * breadth or lb

Thank You......!!!!!!!!!
Mark as brainliest if helpful...
Yours, Jahnavi. 

1 5 1
No jahanvi ...
area of triangle is 1/2 × l×b
she is asking for area of rectangle
yes then it is l×b
i read the question 5 times before answering it ok