If the area of a square plate is 100 m², then what is the side length of the square plate and its perimeter respectively?

10 m, 30 m

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5 m, 40 m

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10 m,40 m

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10 m, 20 m

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Solution

The correct option is C
10 m,40 m

$A r e a o f s q u a r e =$ $s i d e^{2}$
$100^{2} = s i d e^{2}$
Therefore, the side length is 10 m
$P e r i m e t e r o f s q u a r e = 4 \times s i d e$
$= 4 \times 10$
$= 40 m$

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