OA and OB are the two mutually perpendicular radii of a circle having radius 9 cm. The area of the minor sector corresponding to ∠AOB is ...... cm². (????= 3.14) select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.
(a) 63.575
(b) 63.585
(c) 63.595
(d) 63.60
Answers
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2
63.60 is the answer of this question
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6
Option ( b ) is correct.
Explanation :
Radius of the Circle ( r ) = 9cm
Angle subtended at the
center ( x ) = 90°
Area of the minor sector = A
=> A = ( x/360 ) × πr²
=> A = ( 90/360)×3.14×9²
=> A = ( 1/4 ) × 3.14 × 81
=> A = 63.585 cm²
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