Area problems
- 1. A pentagonal prism has 15 edges. How many vertices does it have?
Options- A. 12
- B. 10
- C. 15
- D. 20 Discuss
Correct Answer: 10
- 2. At what point does the line 4x - 3y = -6 intercept the y-axis?
Options- A. (0,2)
- B. (0,3/2)
- C. (2,0)
- D. (3/2,0) Discuss
Correct Answer: (0,2)
- 3. Calculate the area (in cm2 ) of a circle of radius 10.5 cm.
Options- A. 693
- B. 157.5
- C. 315
- D. 346.5 Discuss
Correct Answer: 346.5
- 4. 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
Correct Answer: 250
- 5. If the radius of a circle is decreased to 25% of its original value, calculate the percentage decrease in the area of the circle
Options- A. 25%
- B. 43.75%
- C. 50%
- D. 93.75% Discuss
Correct Answer: 93.75%
- 6. The perimeter and the breadth of a rectangle are 60 cm and 14 cm respectively. Find its area (in cm²)
Options- A. 112
- B. 448
- C. 224
- D. 336 Discuss
Correct Answer: 224
- 7. The area of a square is 100 sq cm, find length of its diagonal?
Options- A. 10?2 cm
- B. 10 cm
- C. 20 cm
- D. 20?2 cm Discuss
Correct Answer: 10?2 cm
- 8. If the radius of a circle is increased by 14% its area increases by
Options- A. 28 percent
- B. 29.96 percent
- C. 14 percent
- D. 14.98 percent Discuss
Correct Answer: 29.96 percent
- 9. In an equilateral triangle of side 24 cms, a circle is inscribed touching its sides. The area of the remaining portion of the triangle is equal to
Options- A. 36.6 sq. cm
- B. 54.2 sq. cm
- C. 72.8 sq. cm
- D. 98.5 sq. cm Discuss
Correct Answer: 98.5 sq. cm
- 10. One of the internal angle of a rhombus is 60° and length of its shorter diagonal is 8 cm. What is the area of the rhombus?
Options- A. 64?3 sq cm
- B. 32?2 sq cm
- C. 64?2 sq cm
- D. 32?3 sq cm Discuss
Correct Answer: 32?3 sq cm
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