√45 × √20 is equal to:

(a) 15 (b) 30 (c) 25 (d) None of these​

2 thoughts on “√45 × √20 is equal to: <br /><br /> (a) 15 (b) 30 (c) 25 (d) None of these​”

1. Answer:

   option b is the answer

   Step-by-step explanation:

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2. Answer:

   [tex] \sqrt{5 \times 9} \times \sqrt{4 \times 5 } \\ = 3 \sqrt{5} \times 2 \sqrt{5} \\ = 6 \times 5 \\ = 30[/tex]

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