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Find the Area of Sector Whose Central Angle and Radius Are 60o and 21 Cm Respectively. (Pi = 22/7) - Geometry

Answer in Brief
Diagram

Find the area of sector whose central angle and radius are 60o and 21 cm respectively.
`(pi = 22/7)`

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Solution

Area =`theta/360 xx pi"r"^2`

⇒ A `= 60/360 xx 22/7 xx 21^2`

⇒ A` = 1/6 xx 22/7 xx 21 xx 21`

⇒ A = 11 × 21 

⇒ A = 231 cm2

Concept: Tangent to a Circle
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