Discussion of Question with ID = 078 under Areas

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Question

The difference between the length and breadth of a rectangle is 68 m. What is the area if the perimeter is 168 meters?

A

608 sq. meters.

B

610 sq. meters.

C

606 sq. meters.

D

612 sq. meters.

Soln.
Ans: a

If L and B are the length and breadth of the rectangle, then L - B = 68 and 2(L + B) = 168. Solving, we get L = 76 and B = 8, so the area is 76 × 8 = 608 sq. m. TIP: Sometimes long multiplications can be avoided by looking at the units place of the given options.


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