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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

THANK YOU