Aptitude - Area

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"Nothing in life is to be feared, it is only to be understood."
- Marie Curie

The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:

A. 15360B. 153600
C. 30720D. 307200


An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

A. 2%B. 2.02%
C. 4%D. 4.04%


The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the area of the rectangle is 216 sq. cm, what is the length of the rectangle?

A. 16 cmB. 18 cm
C. 24 cmD. Data inadequate
E. None of these


The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:

A. 40%B. 42%
C. 44%D. 46%


A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?

A. 2.91 mB. 3 m
C. 5.82 mD. None of these

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