If radii of two concentric circles are 4cm and 5 cm, then find the length of each chord of one circle which is tangent to the other circle
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consider ODA
AD² = AO²-OD² (pythagoras theorem)
AD = root of (5²-4²)
AD = root of (25-16)
AD = root of 9
AD = 3
AD = DB = 3
AB = AD+DB
= 3+3
= 6
HOPE THIS HELPS YOU
AD² = AO²-OD² (pythagoras theorem)
AD = root of (5²-4²)
AD = root of (25-16)
AD = root of 9
AD = 3
AD = DB = 3
AB = AD+DB
= 3+3
= 6
HOPE THIS HELPS YOU
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