areas MCQs – Page 5

Practise focused areas questions with marked answers for exam preparation and subject revision.

areas Mcqs

81. If the radius of a circle is increased to 3 times, then how many times will its circumference be increased?
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A. 9times

B. 3times

C. 1/3 times

D. 2times

82. The wire bent in the form of a square enclose an area of 484 Sq.cm. If the same wire is bent so as to from a circle than the area enclosed will be_________?
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A. 644 Sq.cm

B. 616 Sq.cm

C. 484Sq.cm

D. 538 2/7 Sq.cm

83. A swimming bath is 24 m long and 15 m broad. When a number of men drive into the bath. The height of water rises by 1cm. If the average volume of water displaced by each man be 0.1m3 how many mean are there in the both?
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A. 32

B. 42

C. 46

D. 36

84. A paper is in a square form whose one side is 20 cm. Two semi circles are drawn on its opposites as diameters. If these semi circles are cut down what is the area of the remaining paper?
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A. 200? cm<sup>2</sup

B. (400 100?) cm2

C. (400 2?) cm<sup>2</sup

D. (400 200?) cm<sup>2</sup

85. The ratio of the area of a square to that of the square drawn on its diagonal is_________?
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A. 2:05

B. 3:05

C. 3:04

D. 1:2

86. The ratio of the area of a square to that of the square drawn on its diagonal is?
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A. 1:2

B. 3:05

C. 3:04

D. 2:05

87. The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times of the square. The side of the square in cm is__________?
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A. 15

B. 20

C. 60

D. 30

88. One side of a rectangular field is 4 m and its length along diagonal is 5 m. What is the area of the field?
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A. 4?14 sq m

B. 12 sq m

C. 20 sq m

D. 15 sq m

89. The area of a circle is increased by 22Sq.cm when its radius is increased by 1cm. The original radius of the circle is_________?
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A. 6cm

B. 3.5 cm

C. 3 cm

D. 3.2 cm

90. What is the area of a square field whose diagonal of length 20 m?
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A. 300 sq m

B. 250 sq m

C. 200 sq m

D. 400 sq m

91. The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area?
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A. 240 cm2

B. 280 cm<sup>2</sup>

C. 260 cm<sup>2</sup>

D. 220 cm<sup>2</sup>

92. A rectangular farm has to be fenced one long side, one short side and the diagonal. If the cost of fencing is Rs.10 per meter. The area of farm is 1200 m2 and the short side is 30 m long. How much would the job cost?
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A. Rs.1400

B. Rs.1500

C. Rs.700

D. Rs.1200

93. A man walked 20 m to cross a rectangular field diagonally. If the length of the field is 16 cm. Find the breadth of the field is________?
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A. 11 m

B. 13 m

C. 12 m

D. 14 m

94. How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 30 m long and 16 1/2 m board?
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A. 95

B. 100

C. 90

D. 99

95. The cross-section of a cannel is a trapezium in shape. If the cannel is 10 m wide at the top and 6 m wide at the bottom and the area of cross-section is 640 sq m, the depth of cannel is_________?
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A. 60 m

B. 40 m

C. 20 m

D. 80 m

96. If the diagonal of a square is doubled. How does the area of the square change?
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A. none of the above

B. Becomes twofold

C. Becomes fourfold

D. Becomes threefold

97. The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?
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A. 50% increase

B. 25% increase

C. 75% decrease

D. 50% decrease

98. 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?
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A. 40

B. 50

C. None of These

D. 120

99. The radius of a circular wheel is 1.75 m, how many revolutions will it make in traveling 1 km?
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A. 3000

B. 4000

C. 1000

D. 2000

100. A plot of land in the form of a rectangle has dimensions 240m x 180m. A draint 10m wide is dug all around it on the outside and the earth dug out is evenly spread over the plot increasing its surface level by 25cm. The depth of the drailent of
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A. 1.229m

B. 1.225m

C. 1.227m

D. 1.233m

Showing 81 to 100 of 149 mcqs