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Q: If the lateral surface area of the cube is 144 cm², then what is the length of its side?
  • A. 4 cm
  • B. 8 cm
  • C. 5 cm
  • D. 6 cm
Correct Answer: Option D - Lateral surface area of cube = 4a² 4a² = 144 a² = 36 Side of cube = 6
D. Lateral surface area of cube = 4a² 4a² = 144 a² = 36 Side of cube = 6

Explanations:

Lateral surface area of cube = 4a² 4a² = 144 a² = 36 Side of cube = 6