Discussion
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- Question
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
- Correct Answer
- 20
- 1. 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 Discuss
- 2. 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 Discuss
- 3. 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 Discuss
- 4. 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 Discuss
- 5. 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 Discuss
- 6. 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 Discuss
- 7. 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 Discuss
- 8. 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 Discuss
- 9. PQRA is a rectangle, AP = 22 cm, PQ = 8 cm. ?ABC is a triangle whose vertices lie on the sides of PQRA such that BQ = 2 cm and QC = 16 cm .Then the length of the line joining the mid points of the sides AB and BC is
Options- A. 4?2 cm
- B. 5 cm
- C. 6 cm
- D. 10 cm Discuss
- 10. D and E are points on the sides AB and AC respectively of ?ABC such that DE is parallel to BC and AD:DB = 4:5, CD and BE intersect each other at F. Then the ratio of the areas of ?DEF and ?CBF
Options- A. 16:25
- B. 16:81
- C. 81:16
- D. 4:9 Discuss
Area problems
Search Results
Correct Answer: 1000 cm3
Correct Answer: Rs 528
Correct Answer: 96 cm2
Correct Answer: 247.5 cm2
Correct Answer: 72 m
Correct Answer: 50 2/7 sq.cm
Correct Answer: 1 cm
Correct Answer: ?2-1
Correct Answer: 5 cm
Correct Answer: 16:81
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