Area - Arithmetic Aptitude Questions and Answers

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The area of playground is 1600 m². What is the perimeter?

I. It is a perfect square playground.

II. It costs Rs. 3200 to put a fence around the playground at the rate of Rs. 20 per metre.

I alone sufficient while II alone not sufficient to answer

II alone sufficient while I alone not sufficient to answer

Either I or II alone sufficient to answer

Both I and II are not sufficient to answer

Both I and II are necessary to answer

Answer : Option C

Explanation :

Area = 1600 m².

I. Side = 1600 m = 40 m. So, perimeter = (40 x 4) m = 160 m.

I alone gives the answer.

II. Perimeter = $\frac {\text{Total cost} } {\text{cost per metre } }$ = $\frac { 3200} { 20 }$ m =160 m