O is the centre of the circle. Find the length of radius, if the chord of length 16 cm is at a distance of 6 cm from the centre
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Answered by
3
Answer:
suppose AB is the chord and OM perpendicular to AB
we know that distance from centre to the chord bisects the circle
so, AM=MB=8cm
OM=6cm
and OA is radius of circle
Now in Tri.AOM
OA^2=OM^2 + AM^2
OA^2=36 + 64
OA^2=100
OA = 10
so, radius of circle is 10 cm
HOPE THIS ANSWER WOULD HELP YOU.
Answered by
4
Step-by-step explanation:
given : AB Is a chord of 16cm and the distance between OM = 6cm
we have to find the raidus
proof : In right angled triangle OMB
OM = 6CM, MB = 1/2 AB => 1/2*16 => 8cm
And OB = ?
so, by using Pythagoras therom
(OB)²= (OM)² + ( MB )²
(0B)² = (6)² + (8)²
(OB)²= 36 + 64
(OB)² =
OB = √
OB = 10
Therefore the length of raidus is 10cm
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