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BINCY .S .BABYCANDIDATE CODE :18014350005
MATHEMATICS
CIRCLES
CIRCLES
THESE ARE CIRCLES.THEIR SIZES ARE DIFFERENT.WE CAN DRAW CIRCLES IN DIFFERENT SIZES
THE POINT WHERE WE FIX THE TIP OF THE COMPASS IS THE
CENTRE OF THE CIRCLE.
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CENTRE
THE LONGEST LINE THROUGH THE CENTRE OF A CIRCLE IS CALLED THE DIAMETER.THE LENGTH OF SUCH LINE IS ALSO CALLED DIAMETER.
DIAMETER
CHORDCHORD IS THE LINE JOINING TWO POINTS OF A CIRCLE
DIAMETER IS THE LARGEST CHORD OF THE CIRCLE
RADIUS THE DISTANCE FROM THE CENTRE TO THE CIRCLE IS CALLED THE RADIUS OF THE CIRCLE.
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DIAMETER IS THE DOUBLE OF THE RADIUS
DIAMETER = 2*RADIUS
RADIUS IS THE HALF OF THE DIAMETER
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RADIUS = ½ * DIAMETER
PERIMETER OF THE CIRCLE
PERIMETER OF THE CIRCLE = 2πr ;
r= RADIUS OF THE CIRCLE
AREA OF THE CIRCLE
AREA OF THE CIRCLE = πr2 ;
r= RADIUS OF THE CIRCLE
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