Find the area of PQRS
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area of quadrilateral pqrs=area of triangle qrs+area of triangle qps
area of quadrilateral pqrs=(1/2×5.5cm×2.5)+(1/2×5.5×1.5)
=(1/2×13.75)+(1/2×8.25)
=6.87cm²+4.12cm²
=10.99cm²
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