Find the area of sector of circle with radius 21 cm and central angle 60°
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Answer:
231
Step-by-step explanation:
Area of sector = (Angle/360) ×πr²
= (60/360 ) × (22/7 )×21×21
=(1/6 ) × (22×3×21)
=22×3×21/6
=11×21
=231 cm²
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