Discussion
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- Question
? DEF is right angled at E. If m ?D = 30°. What is the length (in cm) of DE, if EF = 2?3 cm?
Options- A. 3
- B. 4
- C. 6
- D. 2
- Correct Answer
- 6
- 1. ?ABC is right angled at B. BD is an altitude. AD = 9 cm and DC = 16 cm. What is the value of BD (in cm)?
Options- A. 6
- B. 18
- C. 21
- D. 12 Discuss
- 2. The diagonal of a square is 12 cm what is the length (in cm) of its side?
Options- A. 6?2
- B. 12?2
- C. 6
- D. 9 Discuss
- 3. The areas of two similar triangles ?ABC and ?PQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?
Options- A. 16
- B. 12
- C. 8
- D. 6 Discuss
- 4. What is the reflection of the point (-0.5, 6) in the x-axis?
Options- A. (0.5, -6)
- B. (-6, -0.5)
- C. (6, -0.5)
- D. (-0.5, -6) Discuss
- 5. What is the area (in sq cm) of a rhombus if the lengths of the diagonals are 12 cm and 14 cm?
Options- A. 42
- B. 168
- C. 84
- D. 63 Discuss
- 6. What is the area (in sq cm) of a rhombus if the lengths of its diagonals are 25 cm and 20 cm?
Options- A. 500
- B. 250
- C. 125
- D. 200 Discuss
- 7. What is the area (in sq cm) of an equilateral triangle of side 14 cm?
Options- A. 49?3
- B. 98?3
- C. (49/2)?3
- D. (49/4)?3 Discuss
- 8. Point P is the midpoint of segment AB. Co-ordinates of P are (3 , 1) and B are (5, -4). What are the co-ordinates of point A?
Options- A. (-1 , 7)
- B. (1 , -7)
- C. (1 , 6)
- D. (-1 , -7) Discuss
- 9. What is the slope of the line perpendicular to the line passing through the points (-5 , 1) and (-2 , 0)?
Options- A. -3
- B. 3
- C. -1/3
- D. 1/3 Discuss
- 10. What is the area (in sq cm) of a rectangle if its diagonal is 25 cm and one of its sides is 24 cm?
Options- A. 186
- B. 144
- C. 132
- D. 168 Discuss
Area problems
Search Results
Correct Answer: 12
Correct Answer: 6?2
Correct Answer: 8
Correct Answer: (-0.5, -6)
Correct Answer: 84
Correct Answer: 250
Correct Answer: 49?3
Correct Answer: (1 , 6)
Correct Answer: -1/3
Correct Answer: 168
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