AREA PROBLEMS QUIZ

A room is half as long again as it is broad. The cost of carpeting the at Rs. 5 per sq.m is Rs. 270 and the cost of papering the four walls at Rs. 10 per sq.m is Rs. 1720. If a door and 2 windows occupy 8 sq. m, find the dimensions of the room.

b=6; l=18; H=6

l=5; b=18; H=18

l=6; b=18; H=15

b=5; l=6; H=18

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A rectangular carpet has an area of 60 sq. m. Its diagonal and longer side together equal 5 times the shorter side, The length of the carpet is?

5 m

14.5 m

13 m

12 m

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How many circular plates of diameter d be taken out of a square plate of side 2d with minimum loss of material?

6

5

8

2

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The length of hall is (4/3) times its breadth. If the area of hall be 300 square meters, the difference between the length and the breadth is?

15 meters

3 meters

None of these

4 meters

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

50

75

No change

None of these

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

Rs. 558

Rs. 458

Rs. 358

Rs. 258

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A parallelogram has sides 30m and 14m and one of its diagonals is 40m long. Then its area is

336

236

136

436

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The sides of a triangle area in the ratio of 1/3 : 1/4 : 1/5 and its perimeter is 94 cm. Find the length of the smallest side of the triangle .

27 cm

18 cm

24 cm

22.5 cm

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A hall 20 m long and 15 m broad is surrounded by a verandah of uniform width of 2.5 m. the cost of flooring the verandah at the rate of 3.50 per sq. meter is?

Rs. 500

Rs. 700

Rs. 600

Rs. 800

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If the radius of a circle is increased by 6%, find the percentage increase in its area.

17%

15%

12.36%

8.39%

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