length -?,breath-9cm,area-?,perimeter-50am
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perimeter = 2 ( l + b ) = 50 cm
(l + b) = 50cm / 2 = 25 cm
(l + b) = 25 cm
( l + 9cm ) = 25 cm
l = 25 cm - 9cm = 16cm
area = l x b = 16 cm x 9 cm = 144 square cm
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