Question

12). The area of a square is 100 cm? /Then its length is _ cm.
a). 20 b). 10 c). 50 d). 25
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Answer 1

$\sf Area = {(side)}^{2} \\ \sf side = \sqrt{100} \\ \boxed{\sf side = 10}$

$\sf \: option \: (b) \: is \: correct.$

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Answer 2

Answer:

the length of the square us 20