MCQ
What is the cube of $2a?$
- ✓$8a^3$
- B$16a^3$
- C$2a^3$
- D$4a^3$
✓
Answer
Correct option: A.
$8a^3$
$(2a)^3 = 2a \times 2a \times 2a$
$= (2 \times 2 \times 2) \times (a \times a \times a)$
$= 8a^3$
$= (2 \times 2 \times 2) \times (a \times a \times a)$
$= 8a^3$
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