vipulgoyal wrote:As the figure shown above, the rectangular region consists of 20 square with side of 1 unit each .What is the area of the triangle?
please refer attachment
I got it right by subtracting three trangles from one rectangle I am looking for alt and fast approach
If we omit the bottom row, what remains is a rectangle circumscribing the triangle.
The area of this rectangle = 3*5 = 15.
The triangle constitutes less than 1/2 of the rectangle.
Thus, the correct answer choice must be LESS than 7.5.
It is possible that only one answer choice will be viable, as in the following problem from GMATPrep:
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