Question

II UIIIICIUUICUI CIUI
2. Very short type questions:
i) Find the square root's of the following number 400.
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Answer 1

Answer:

20 is square root of 400

Step-by-step explanation:

2

Answer 2

400 into prime factor method

$400 = 2 \times 2 \times 2 \times 2 \times 5 \times 5 \\ = \sqrt{400} \\ = \sqrt{(2 \times 2) \times (2 \times 2) \times 5 \times 5} \\ = 2 \times 2 \times 5 \\ = 20$