Question

distance of Chord a circle is8 CM length of the chord ABis12.cm find the diameter of the circle​

Answer 1

o is circle centre and d is mid point of ab so ad is 6

and od is 8 given

by p. t.

(AO)2=(AD)2+(OB)2

AND AO IS RADIUS

(AO)2=(6)2+(8)2

= 36+ 64

= 100

ROOT OF (AO)2 IS AO

ROOT OF 100 IS 10 BUT WE ANSWER IN +AND - BUT WE TAKE ONLY + BECAUSE DISTANCE IS ALWAY IN PLUS

AO=10

DIAMETER = 2 RADIUS

= 2× 10

= 20 CM ANSWER

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