Discussion
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- Question
PQR is a right angled triangle in which PQ = QR. If the hypotenuse of the triangle is 20 cm, then what is the area (in cm2) of the triangle PQR?
Options- A. 100?2
- B. 100
- C. 50?2
- D. 50
- Correct Answer
- 100
- 1. Triangle PQR is inscribed in the circle whose radius is 14 cm. If PQ is the diameter of the circle and PR = 10 cm, then what is the area of the triangle PQR?
Options- A. 196
- B. 30?19
- C. 40?17
- D. 35?21 Discuss
- 2. What is the area (in cm2) of the circumcircle of a triangle whose sides are 6 cm, 8 cm and 10 cm respectively?
Options- A. 275/7
- B. 550/7
- C. 2200/7
- D. 1100/7 Discuss
- 3. If O is the orthocentre of a triangle ABC and ?BOC = 100°, the measure of ?BAC is
Options- A. 100°
- B. 180°
- C. 80°
- D. 200° Discuss
- 4. Diagonals of a Trapezium ABCD with AB || CD intersect each other at the point O. If AB = 2CD, then the ratio of the areas of ?AOB and ?COD is
Options- A. 4:1
- B. 1:16
- C. 1:4
- D. 16:1 Discuss
- 5. 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
- 6. PQRS is a square whose side is 20 cm. By joining opposite vertices of PQRS are get four triangles. What is the sum of the perimeters of the four triangles?
Options- A. 40?2
- B. 80?2 + 80
- C. 40?2 + 40
- D. 40?2 + 80 Discuss
- 7. If ABCDEF is a regular hexagon, then what is the value (in degrees) of ?ADB?
Options- A. 15
- B. 30
- C. 45
- D. 60 Discuss
- 8. ABCD is square and CDE is an equilateral triangle outside the square. What is the value (in degrees) of ?BEC?
Options- A. 15
- B. 30
- C. 25
- D. 10 Discuss
- 9. There is a circular garden of radius 21 metres. A path of width 3.5 metres is constructed just outside the garden. What is the area (in metres2) of the path?
Options- A. 50.05
- B. 57.56
- C. 52.12
- D. none Discuss
- 10. A solid hemisphere has radius 14 cm. It is melted to form a cylinder such that the ratio of its curved surface area and total surface area is 2 : 3. What is the radius (in cm) of its base?
Options- A. 1033
- B. 1433
- C. 733
- D. 2133 Discuss
Area problems
Search Results
Correct Answer: 30?19
Correct Answer: 550/7
Correct Answer: 80°
Correct Answer: 4:1
Correct Answer: 16:81
Correct Answer: 80?2 + 80
Correct Answer: 30
Correct Answer: 15
Correct Answer: none
Correct Answer: 1433
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