MCQ
The value of $\sqrt{20}\times\sqrt{5}$ is:
- ✓$10$
- B$2\sqrt{5}$
- C$20\sqrt{5}$
- D$4\sqrt{5}$
✓
Answer
Correct option: A.
$10$
$\sqrt{20}\times\sqrt{5}=\sqrt{4\times5}\times\sqrt{5}$
$=2\sqrt{5}\times\sqrt{5}=2\times5=10$
Hence, the correct answer is option $(a).$
$=2\sqrt{5}\times\sqrt{5}=2\times5=10$
Hence, the correct answer is option $(a).$
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