Find the area of a square whose side is
(a) 15 cm
(b) 55 cm

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Solution

$A r e a$ $o f$ $a$ $s q u a r e$ $=$ $s i d e$ $\times$ $s i d e$
$(a)$ $I f$ $s i d e$ $=$ $15 c m,$
$A r e a$ $=$ $15$ $\times$ $15$ $=$ $225 c m^{2}$
$(b)$ $I f$ $s i d e$ $=$ $55 c m,$
$A r e a =$ 55 $\times$ $55$ $=$ $3025 c m^{2}$

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