In the diagram O is the center of circle PRQ. The radius is 3.5cm and ∠POQ = 50^o. Use the diagram to answer question below. (take π = 3.142)
Calculate, correct to three significant figures, the area of sector OPQ

• A.3.403cm²
• B.5.350cm²
• C.10.99cm²
• D.157.1cm²
• E.175.0cm²