Discussion
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- Question
If the length of the side of an equilateral triangle is 8 cm, what is its area?
Options- A. 32?3 sq cm
- B. 16 sq cm
- C. 16?3 sq cm
- D. 32 sq cm
- Correct Answer
- 16?3 sq cm
- 1. If the perimeter of a semi-circle is 108 cm, then find its radius (in cm).
Options- A. 42
- B. 28
- C. 56
- D. 21 Discuss
- 2. 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
- 3. 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
- 4. The length and breadth of a rectangle are 24 cm and 7 cm respectively. Calculate its perimeter (in cm).
Options- A. 124
- B. 48
- C. 62
- D. 96 Discuss
- 5. ? DEF is right angled at E. If m?D = 30°, what is the length of DE (in cm), if EF = 6?3 cm?
Options- A. 18
- B. 12?3
- C. 18?3
- D. 12 Discuss
- 6. The lengths of the diagonals of a rhombus are 8 cm and 6 cm. The area of rhombus is:
Options- A. 96 cm2
- B. 60 cm2
- C. 48 cm2
- D. 24 cm2 Discuss
- 7. The length of the diagonal of a square is 10 cm. What is area of this square?
Options- A. 50 sq cm
- B. 100 sq cm
- C. 200 sq cm
- D. 25 sq cm Discuss
- 8. What is the length of the side of an equilateral triangle, if its area is 64?3 sq cm?
Options- A. 8 cm
- B. 16 cm
- C. 16?3 cm
- D. 8?3 cm Discuss
- 9. Area of 4 walls of a cuboid is 448 sq cm, its length is 18 cm and height is 8 cm. What is its breadth (in cm)?
Options- A. 10
- B. 9
- C. 8
- D. 7 Discuss
- 10. What is the area (in sq cm) of a rectangle if its diagonal is 51 cm and one of its sides is 24 cm?
Options- A. 540
- B. 810
- C. 1080
- D. 360 Discuss
Area problems
Search Results
Correct Answer: 21
Correct Answer: 8
Correct Answer: (-0.5, -6)
Correct Answer: 62
Correct Answer: 18
Correct Answer: 24 cm2
Correct Answer: 50 sq cm
Correct Answer: 16 cm
Correct Answer: 10
Correct Answer: 1080
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