1. If the length and breadth of a rectangular plot are increased by 50 % and 20% respectively, then the new area is how many times the orginal area ?

5/9
10
9/5
None of these

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2. The length of a rectangle is increased by 60%. By what percent would the width have to be decreased to maintain the same area ?

37.5%
60%
75%
120%

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3. If each side of a square is increased by 50%, the ratio of the area of the resulting square to the area of the given square is :

5 :4
9 :4
4 : 5
4 : 9

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4. The length of ablackboard is 8 cm more than its breadth. If the length is increased by 7 cm and breadth is decreased by 4 cm, the area remains the same. The length and breadth of the black board (in cms) will be :

28, 20
34, 26
40, 32
56, 48

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5. If the diagonal of a square is doubled to make the diagonal of another square, the area of the new square will :

become two-fold
become three-fold
become four-fold
remain the same

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6. The area of a rectangle is equal to the area of a circle. What is the length of that rectangle ?
To find out the answer, which of the following informations given in statements P and Q is/are sufficient.

P : The diameter of the circle is 28 cm
Q : The breadth of the rectangle is 22 cm

Only P is sufficient
Only Q is sufficient
Both P and Q are needed
Even P and Q are not sufficient

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7. a hall 20m long and 15 m broad is surrounded by a verandah of uniform width of 2.5 m. the cost of flooring the verandah at Rs. 3.50 per square metre is :

Rs. 500
Rs. 600
Rs. 700
Rs. 800

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8. The number of marble slabs of soze 20 cm x 30 cm required to pavethe floor of a square room of side 3 metres, is :

100
150
225
25

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9. If each side of a square is increased by 25%, its area is increased by

25%
50%
40.5%
56.25%

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10. If each side of a square is increased by 25%, its area is increased by

25%
50%
40.5%
56.25%

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Quantitative Aptitude-Area

Quantitative Aptitude-Area

Quantitative Aptitude