Class V

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:
  1. 2%
  2. 2.02%
  3. 4%
  4. 4.04%
What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad ?
  1. 814
  2. 820
  3. 840
  4. 844
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 ?
  1. 40
  2. 120
  3. None of these
  4. Data inadequate
Which of the following is a reasonable measure for the area of a classroom ?
  1. 100 square inches
  2. 100 square feet
  3. 100 square yards
  4. 100 square miles
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
  1. 40%
  2. 42%
  3. 44%
  4. 46%
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