Question
A circle has a radius of 15 cm, and a chord subtends a
central angle of 60° at the center. Find the area of the segment formed by the chord.Solution
Area of sector = (θ/360) × πr² = (60/360) × π(15)² = (1/6) × π(225) = 117.75 cm². Area of triangle = (1/2) × base × height = (1/2) × 15 × (15 × √3 / 2) = 97.425 cm². Area of segment = 117.75 – 97.425 = 20.325 cm².
A-5,  A,  35,  52, 78, 115
30, 42, 48, 54, 65, 81, 126
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25, 34, 18, 34, 9, 46 Find the wrong number in the given number series.
32, 48, 72, 108, 162, 245
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
547, 594, 640, 691, 741, 792
Find the wrong number in the given number series.
26, 38, 60, 110, 206, 398
75, 450, 225, 1330, 675, 4050
Find the wrong number in the given number series.
8, 12, 23, 40, 66, 103
62, 79, 98, 119, 142, 165