Question

Square root of 45 multiply by square root of 20​

Answer 1

$Value \: of \: \sqrt{45} \times \sqrt{20}$

$= \sqrt{ 45 \times 20 }$

$= \sqrt{ 3 \times 3 \times 5 \times 5 \times 2 \times 2 }$

$= 3 \times 5 \times 2$

$= 30$

Therefore.,

$\red{ Value \: of \: \sqrt{45} \times \sqrt{20} }\green { = 30 }$

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Answer 2

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