Selected MCQ

Current Question
Two circles have a radius relation. Area of the square is 196 cm². Find radius.
  • A. 12π
  • B. 16π
  • C. 24π
  • D. 32π
Correct Answer: C
Explanation:
Side=14, radius=7×? → area relation.
Related Question 1
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.
Related Question 2
A wire bent into a square encloses 484 cm². If reshaped, find a new area.
  • A. 484 cm²
  • B. 538 2/7 cm²
  • C. 616 cm²
  • D. 644 cm²
Correct Answer: C
Explanation:
Perimeter conserved.
Related Question 3
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 4
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 5
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.