Discussion of Question with ID = 018 under Areas

This is the discussion forum for this question. If you find any mistakes in the solution, or if you have a better solution, then this is the right place to discuss. A healthy discussion helps all of us, so you are requested to be polite and soft, even if you disagree with the views of others. The question and its current solution has also been given on this page.



The difference between the length and breadth of a rectangle is 2 m. What is the area if the perimeter is 8 meters?


3 sq. meters.


5 sq. meters.


9 sq. meters.


7 sq. meters.

Ans: a

If L and B are the length and breadth of the rectangle, then L - B = 2 and 2(L + B) = 8. Solving, we get L = 3 and B = 1, so the area is 3 × 1 = 3 sq. m. TIP: Sometimes long multiplications can be avoided by looking at the units place of the given options.

Comments and Discussion