Find the perimeter and area of the adjoining figure,
it being given that AB || CD, AB = 12 cm, CD = 15 cm,
BD = 4 cm and one end of the figure is a semi-circle with AB
as diameter. (Take n = 3.14.)
[Hint : Draw BE || AC. Then, CE = AB = 12 cm, ED = 3 cm.
:: BE = ED2+ BD2 = 5 cm.]
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