Question

4. Find the length of the diagonal of a square whose side is 10 cm
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Answer 1

Answer:

15cm is correct answer

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Answer 2

Answer:

Given,

Side of square  = AB = 10 cm

As you know

Length of diagonal = AC

AC^2 = AB^2 + BC^2

AC^2 = 10^2 + 10^2

AC = $\sqrt{200}$ cm

Length of diagonal is = $\sqrt{200}$ cm