Aptitude:: Area

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The diagonal of the floor of a rectangular closet is 7 feet. The shorter side of the closet is 4 feet. What is the area of the closet in square feet?

A. 5 B. 13
C. 27 D. 37

A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:

A. Rs. 456 B. Rs. 458
C. Rs. 558 D. Rs. 568

A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq. feet, how many feet of fencing will be required?

A. 34 B. 40
C. 68 D. 88

The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ 26.50 per metre is Rs. 5300, what is the length of the plot in metres?

A. 40 B. 50
C. 120 D. Data inadequate
E. None of these    

The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

A. 25% increase B. 50% increase
C. 50% decrease D. 75% decrease

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