1.

In the figure, PQSO is a trapezium in which PQ is parallel to OS, ∠POS=120∘ and ∠PQS=90∘. Points P,Q and R lie on a circle with center O and radius 10. Then the area of the shaded region, is

Answer»
In the figure, PQSO is a trapezium in which PQ is parallel to OS, POS=120 and PQS=90. Points P,Q and R lie on a circle with center O and radius 10. Then the area of the shaded region, is


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