radius of a circle with centre O is 41cm length of a chord from the centre of the circle
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hmm.........maybe 82 cm?
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hey mate here's ur answer....
hope it will help you...
please mark it as brainliest answer...
Step-by-step explanation:
Radius of circle (OA) = 41cm
Chord (AB) = 80cm
Draw OC⊥AB(OC is the line drawn from the centre of the circle to the chord AB and extends upto a point D on the circle.)
We know that
The perpendicular from centre to chord bisects the chord
∴AC=BC=802=40cm
Now in ΔOCA, by Pythagoras theorem
AC2 + OC2 = OA2
=>402 + OC2 = 412
=>1600 + OC2 = 1681
=>OC2 = 81
=> OC2 = 81
=>OC = 81−−√
=>OC = 9cm
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