Area problems
- 1. If a cylinder of radius 4 cm and height 8 cm is melted and constructed into a cone of the same radius, what will be the height of this cone?
Options- A. 48 cm
- B. 24 cm
- C. 36 cm
- D. 12 cm Also asked in: Bank Exams
Correct Answer: 24 cm
- 2. What is the length of the arc whose central angle is 30° and radius of the circle is 21 cm?
Options- A. 22 cm
- B. 16.5 cm
- C. 11 cm
- D. 28 cm Also asked in: Bank Exams
Correct Answer: 11 cm
- 3. Length and breadth of a rectangle are increased by 40% and 70% respectively. What will be the percentage increase in the area of rectangle?
Options- A. 118
- B. 110
- C. 138
- D. 128 Also asked in: Bank Exams
Correct Answer: 138
- 4. What is the slope of the line parallel to the line passing through the points (4,-2) and (-3,5)?
Options- A. 3/7
- B. 1
- C. -3/7
- D. -1 Also asked in: Bank Exams
Correct Answer: -1
- 5. Find the volume (in cm3) of a right circular cylinder of diameter 21 cm and height 10 cm.
Options- A. 3118
- B. 3275
- C. 3621
- D. 3465 Also asked in: Bank Exams
Correct Answer: 3465
- 6. 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
- 7. 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) Also asked in: Bank Exams
Correct Answer: (0,2)
- 8. Calculate the area (in cm2 ) of a circle of radius 10.5 cm.
Options- A. 693
- B. 157.5
- C. 315
- D. 346.5 Also asked in: Bank Exams
Correct Answer: 346.5
- 9. 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 Also asked in: Bank Exams
Correct Answer: 84
- 10. 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% Also asked in: Bank Exams
Correct Answer: 93.75%
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