Selected MCQ

Current Question
A cylinder has a radius of 7 cm and a height of 3 cm. Find the total surface area.
  • A. 308 cm²
  • B. 220 cm²
  • C. 440 cm²
  • D. 132 cm²
Correct Answer: C
Explanation:
TSA = 2πr(r+h).
Related Question 1
The radius of a cylinder is r, and the height is 3r. Find the curved surface area.
  • A. 18πr²
  • B. 3πr²
  • C. 12πr²
  • D. 6πr²
Correct Answer: D
Explanation:
CSA = 2πr × 3r = 6πr².
Related Question 2
The slant height of a cone is 12 cm, and the radius is 4 cm. Find the curved surface area.
  • A. 74π cm²
  • B. 36π cm²
  • C. 48π cm²
  • D. 24π cm²
Correct Answer: C
Explanation:
CSA = πrl = π×4×12.
Related Question 3
Sum of length, breadth, and height of a cuboid is 19 cm, and the diagonal is 5.5 cm. Find surface area.
  • A. 125 cm²
  • B. 236 cm²
  • C. 361 cm²
  • D. None
Correct Answer: B
Explanation:
Use the identity relation.
Related Question 4
The radius of a cylinder is half its height. Inner volume is 616 cm³. Find approximate litres.
  • A. 1.4
  • B. 1.5
  • C. 1.7
  • D. 1.9
Correct Answer: B
Explanation:
Convert cm³ to litres → 616 ≈ 0.616 L (~1.5 approx scaled).
Related Question 5
Total area of 64 squares is 400 cm². Find the side of the big square.
  • A. 17 cm
  • B. 20 cm
  • C. 23 cm
  • D. 26 cm
Correct Answer: D
Explanation:
Total side calculation.