Discussion of Question with ID = 038 under Areas

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Question

The difference between the length and breadth of a rectangle is 30 m. What is the area if the perimeter is 92 meters?

A

304 sq. meters.

B

306 sq. meters.

C

302 sq. meters.

D

308 sq. meters.

Soln.
Ans: a

If L and B are the length and breadth of the rectangle, then L - B = 30 and 2(L + B) = 92. Solving, we get L = 38 and B = 8, so the area is 38 × 8 = 304 sq. m. TIP: Sometimes long multiplications can be avoided by looking at the units place of the given options.


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