Find the value of: 45 20 - Vidyadip

Question

Find the value of: $\sqrt{45}\times\sqrt{20}$

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Answer

We have, $\sqrt{45}\times\sqrt{20}=\sqrt{3\times3\times5\times2\times2\times5}$ $=\sqrt{3\times3\times2\times2\times5\times5}$ $=30$

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