Discussion
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- Question
O is the circumcentre of ?ABC. If AO = 8 cm, then the length of BO is
Options- A. 12 cm
- B. 3 cm
- C. 6 cm
- D. 8 cm
- Correct Answer
- 8 cm
- 1. The least number of square tiles of side 41 cms required to pave the ceiling of a room of size 15m 17cm long and 9m 2 cm broad is:
Options- A. 902
- B. 656
- C. 738
- D. 814 Discuss
- 2. In a quadrilateral PQRS, l_S= 90°. A circle (o, r) touches the sides PQ, QR, RS and SP at A, B, C and D respectively. If QR= 38 cm, RS = 25 cm and QA = 27 cm, find 'r'.
Options- A. 16 cm
- B. 12 cm
- C. 14 cm
- D. 10 cm Discuss
- 3. The diameters of two cylinders are in the ratio 3:2 and their volumes are equal. The ratio of their heights is
Options- A. 2:3
- B. 3:2
- C. 9:4
- D. 4:9 Discuss
- 4. The two sides holding the right-angle in a right-angled triangle are 3 cm and 4 cm long. The area of its circumcircle will be in sq.cm:
Options- A. 6.25pi
- B. 6.75pi
- C. 5pi
- D. 7pi Discuss
- 5. The surface areas of three faces of a cuboid sharing a vertex are 20, 32 and 40 sq. mts. What is the volume of the cuboid in cub. m?
Options- A. ?3024
- B. 184
- C. 160
- D. 92 Discuss
- 6. ABCD is a quadrilateral in which BD and AC are diagonals then
Options- A. AB + BC + CD + AD< AC + BD
- B. AB + BC + CD + DA>AC + BD
- C. AB + BC + CD + DA=AC + BD
- D. AB + BC + CD + DA>2(AC + BD) Discuss
- 7. If O is the centre of a circle of radius 5 cm. At a distance of 13 cm from O, a point P is taken. From this point, two tangents PQ and PR are drawn to the circle. Then , the area of quadrilateral PQOR is
Options- A. 60 cm2
- B. 32.5 cm2
- C. 65 cm2
- D. 30 cm2 Discuss
- 8. 40 men took a dip in a pool 30 m long and 25 m broad. If the average water displaced by a man is 5 cub.m, then what will be the rise (in cm) in level of the pool?
Options- A. 25
- B. 26.66
- C. 27.33
- D. 28.5 Discuss
- 9. The length, breadth and height of a cuboid are in the ratio 19 : 11 : 13. If length is 30 cm more than height, then what is the volume (in cub.cm) of this cuboid?
Options- A. 81510
- B. 89665
- C. 195300
- D. 339625 Discuss
- 10. G and AD are respectively the centroid and median of the triangle ?ABC.The ratio AG:AD is
Options- A. 3:2
- B. 2:3
- C. 3:1
- D. 1:2 Discuss
Volume and Surface Area problems
Search Results
Correct Answer: 814
Correct Answer: 14 cm
Correct Answer: 4:9
Correct Answer: 6.25pi
Correct Answer: 160
Correct Answer: AB + BC + CD + DA>AC + BD
Correct Answer: 60 cm2
Correct Answer: 26.66
Correct Answer: 339625
Correct Answer: 2:3
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