Selected MCQ

Current Question
If the side of a cube is doubled, how many times does its volume increase?
  • A. 2 times
  • B. 4 times
  • C. 6 times
  • D. 8 times
Correct Answer: D
Explanation:
Volume ∝ side³ ⇒ 2³ = 8.
Related Question 1
The volume of a cube of side 5 cm is ____.
  • A. 100
  • B. 125
  • C. 150
  • D. 175
Correct Answer: B
Explanation:
Volume = 5³ = 125.
Related Question 2
Three cubes of sides 9, 12, and 15 cm are melted to form a new cube. Find its side.
  • A. 21 cm
  • B. 19 cm
  • C. 32 cm
  • D. 18 cm
Correct Answer: D
Explanation:
Total volume = cube of new side.
Related Question 3
Volume of cube is 1728 cc. Find surface area.
  • A. 864 cm²
  • B. 648 cm²
  • C. 486 cm²
  • D. 468 cm²
Correct Answer: A
Explanation:
Side = 12 → TSA = 6×144.
Related Question 4
Surface area of the cube is 24 cm². Find volume.
  • A. 8 cm³
  • B. 16 cm³
  • C. 32 cm³
  • D. 64 cm³
Correct Answer: A
Explanation:
Side = 2 → volume = 8.
Related Question 5
Surface area of the cube is 726 m². Find volume.
  • A. 1300 m³
  • B. 1331 m³
  • C. 1452 m³
  • D. 1542 m³
Correct Answer: B
Explanation:
Side = √(726/6).