In the given figure PQRS is a cyclic quadrilateral PQ and SR produced meet at T. Find area of quadrilateral PQRS if area of △PTS=27cm2 (given Triangle TPS is similar to TRQ)
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Solution
area of triangleTPSarea of triangleTRQ=TP2TR2[∵△TPS∼△TRQ] 27area of triangleTRQ=18262 27area of triangleTRQ=91 area of triangleTRQ=3cm2 ∴area of quadrilateralPQRS=area of triangleTPS−area of triangleTRQ =27−3 =24cm2