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2016-03-08T11:42:53+05:30

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Area = b x h
= 5 x 3.6 
= 18 cm²
now, taking RS as the base,
area = b x h
⇒ 18 = b x 4.5 
⇒ b = 18 / 4.5 = 4 cm
so RS = 4cm
1 5 1
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