the distance of the chord of 4cm from the centre of the circle of radius 4cm is a
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Step-by-step explanation:
chord of circle, AB=4cm
OD=?
medium of circle OB=4cm
in ΔOBD
OB^2=OD^2+BD^2
(4)^2=OD^2+(2)^2
16=OD^2+4
16-4=OD^2
OD^2=12
OD=√12
OD=√2*2*3
OD=2√3 cm
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