Area problems
- 1. The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is
Options- A. 4140? sq.cm.
- B. 4110? sq.cm.
- C. 4080? sq.cm.
- D. 4050? sq.cm. Also asked in: Bank Exams
Correct Answer: 4140? sq.cm.
- 2. The radius of a sphere is 6 cm. It is melted and drawn into a wire of radius 0.2 cm. The length of the wire is
Options- A. 81 m
- B. 80 m
- C. 75 m
- D. 72 m Also asked in: Bank Exams
Correct Answer: 72 m
- 3. In a trapezium ABCD, AB and DC are parallel sides and ? ADC = 90°. If AB = 15 cm, CD = 40 cm and diagonal AC = 41 cm. Then the area of the trapezium ABCD is
Options- A. 245 cm2
- B. 240 cm2
- C. 247.5 cm2
- D. 250 cm2 Also asked in: Bank Exams
Correct Answer: 247.5 cm2
- 4. The area of a rhombus having one side 10 cm and one diagonal 12 cm is
Options- A. 48 cm2
- B. 96 cm2
- C. 144 cm2
- D. 192 cm2 Also asked in: Bank Exams
Correct Answer: 96 cm2
- 5. The cost of levelling a circular field at 50 Paise per square metre is Rs 7700. The cost (in Rs) of putting up a fence all round it at Rs 1.20 per meter is ( Use ? = 22/7)
Options- A. Rs 132
- B. Rs 264
- C. Rs 528
- D. Rs 1056 Also asked in: Bank Exams
Correct Answer: Rs 528
- 6. From the four corners of a rectangular sheet of dimensions 25 cm x 20 cm, square of side 2 cm is cut off from four corners and a box is made. The volume of the box is
Options- A. 828 cm3
- B. 672 cm3
- C. 500 cm3
- D. 1000 cm3 Also asked in: Bank Exams
Correct Answer: 1000 cm3
- 7. The sum of the length and breadth of a rectangle is 6 cm. A square is constructed such that one of its sides is equal to a diagonal of the rectangle. If the ratio of areas of the square and rectangle is 5 : 2, the area of the square in cm2 is
Options- A. 20
- B. 10
- C. 4?5
- D. 10?2 Also asked in: Bank Exams
Correct Answer: 20
- 8. The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: ? = 22/7)
Options- A. 50 1/7 sq.cm
- B. 50 2/7 sq.cm
- C. 75 1/7 sq.cm
- D. 75 2/7 sq.cm Also asked in: Bank Exams
Correct Answer: 50 2/7 sq.cm
- 9. A solid sphere of radius 3 cm is melted to form a hollow right circular cylindrical tube of length 4 cm and external radius 5 cm. The thickness of the tube is
Options- A. 1 cm
- B. 9 cm
- C. 0.6 cm
- D. 1.5 cm Also asked in: Bank Exams
Correct Answer: 1 cm
- 10. Two equal circles intersect so that their centres, and the points at which they intersect form a square of side 1 cm. The area (in sq.cm) of the portion that is common to the circles is
Options- A. ?4
- B. ?2-1
- C. ?5
- D. ?2 - 1 Also asked in: Bank Exams
Correct Answer: ?2-1
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