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if OA=5cm and OM= 3 cm of the chord AB is​

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Asked on December 30, 2019 by

Kanti Sadique

In Fig. 3 if OA=5cm and OM=3cm, the length of chord AB (in cm) is

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ANSWER

Given OA=5CM

OM=3CM

∠OMA=

90

˚

So by Pythagoras theorem,

AM

2

=OA

2

−OM

2

AM

2

=5

2

−3

2

AM=4cm

We know that perpendicular from centre bisects the chord

Therefore AB=2AM

AB=8cm