Aptitude:: Area

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11 

The diagonal of the floor of a rectangular closet is feet. The shorter side of the closet is feet. What is the area of the closet in square feet?

A.

B.

C. 27 D. 37

12 

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 m B. 3 m
C. 5.82 m D. None of these

13 

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%

14 

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 cm B. 18 cm
C. 24 cm D. Data inadequate
E. None of these    

15 

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%

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