mathematics MCQs – Page 115

Practise multiple-choice questions from mathematics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

2281. The ratio of the volumes of two cubes is 729 : 1331. What is the ratio of their total surface areas?
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A. 9:11

B. 27:12:00

C. 81 : 121

D. 729 : 1331

2282. The circumferences of two circles are 264 meters and 352 meters. Find the difference between the areas of the larger and the smaller circles.
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A. 4312 sq m

B. 4192 sq m

C. 4360 sq m

D. 4304 sq m

2283. The perimeter of a triangle is 28 cm and the inradius of the triangle is 2.5 cm. What is the area of the triangle?
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A. 25 cm2

B. 42 cm2

C. 49 cm2

D. None of these
2284. What is the are of an equilateral triangle of side 16 cm?
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A. 48?3 cm2

B. 9.6?3 cm2

C. 64?3 cm2

D. 128?3 cm2

2285. The ratio of the length and the breadth of a rectangle is 4 : 3 and the area of the rectangle is 6912 sq cm. Find the ratio of the breadth and the area of the rectangle?
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A. 1 : 96

B. 1:48

C. 0.1

D. 0.088888889

2286. A 25 cm wide path is to be made around a circular garden having a diameter of 4 meters. Approximate area of the path is square meters is__________?
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A. 5.5

B. 3.34

C. 2

D. 4.5

2287. There are two circles of different radii. The area of a square is 196 sq.cm, whose side is half the radius of the larger circle. The radius of the smaller circle is three-seventh that of the larger circle. What is the circumference of the smaller circle ?
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A. 12 ? cm

B. 24 ? cm

C. 32 ? cm

D. 16 ? cm

2288. The parameter of a square is equal to the perimeter of a rectangle of length 16 cm and breadth 14 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square. (Round off your answer to two decimal places)?
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A. 94.94 cm

B. 84.92 cm

C. 23.57 cm

D. 47.14 cm

2289. The length of a rectangular floor is more than its breadth by 200%. If Rs. 324 is required to paint the floor at the rate of Rs. 3 per sq m, then what would be the length of the floor?
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A. 18 m

B. 21 m

C. 27 m

D. 24 m

2290. The area of a square is 4096 sq cm. Find the ratio of the breadth and the length of a rectangle whose length is twice the side of the square and breadth is 24 cm less than the side of the square.
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A. 5:14

B. None of these

C. 18:05

D. 7:16

2291. The dimensions of a room are 25 feet * 15 feet * 12 feet. What is the cost of white washing the four walls of the room at Rs. 5 per square feet if there is one door of dimensions 6 feet * 3 feet and three windows of dimensions 4 feet * 3 feet each?
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A. Rs. 3560

B. Rs. 3600

C. Rs. 4800

D. Rs. 4530
2292. What will be the cost of building a fence around a square plot with area equal to 289 sq ft, if the price per foot of building the fence is Rs. 58?
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A. None of these

B. Rs. 3828

C. Rs. 3944

D. Rs. 4176

2293. The volumes of two cones are in the ratio 1 : 10 and the radii of the cones are in the ratio of 1 : 2. What is the length of the wire?
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A. 1:05

B. 4:05

C. 2 : 5

D. 3:05

2294. The parameter of a square is double the perimeter of a rectangle. The area of the rectangle is 480 sq cm. Find the area of the square.
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A. 162 sq cm

B. 72 sq cm

C. Cannot be determined

D. 200 sq cm

2295. A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?
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A. 18 cm

B. 45 cm

C. 90 cm

D. None of these
2296. The radius of a wheel is 22.4 cm. What is the distance covered by the wheel in making 500 resolutions.
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A. 808 m

B. 704 m

C. 352 m

D. 252 m

2297. The area of a square is equal to five times the area of a rectangle of dimensions 125 cm * 64 cm. What is the perimeter of the square?
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A. 400 cm

B. 1000 cm

C. 600 cm

D. 800 cm

2298. Find the area of a rhombus whose side is 25 cm and one of the diagonals is 30 cm?
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A. 360 sq.m

B. 480 sq.m

C. 225 sq.m

D. 600 sq.m
2299. Find the area of a parallelogram with base 24 cm and height 16 cm.
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A. 384 cm2

B. 192 cm2

C. 262 cm2

D. 131 cm2

2300. The length of a rectangle is two fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1225 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 10 units?
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A. 156

B. 175

C. 140

D. 214