Find the length of cord which is at a distance of 15cm from the centre of a circle of radius 25cm
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Lenth of chord is
2 × { ✓(square of radius - square of chord distance from center)
2 × {✓( 25×25 - 15 × 15 )}
2 ×✓ ( 625 - 225 )
2 × ✓ (400)
2 × 20 = 40
2 × { ✓(square of radius - square of chord distance from center)
2 × {✓( 25×25 - 15 × 15 )}
2 ×✓ ( 625 - 225 )
2 × ✓ (400)
2 × 20 = 40
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