the circle by ranjana o a circle eg. ball,bangle,lemon.coin
TRANSCRIPT
![Page 1: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/1.jpg)
The Circle
By Ranjana
![Page 2: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/2.jpg)
O A
CIRCLEEg. ball,bangle,lemon.coin
![Page 3: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/3.jpg)
OA
CENTRE : O
RADIUS : OA
BCENTRE
RADIUS
![Page 4: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/4.jpg)
.O
In a plane,each point of the circle is at equal distance from a fixed point.The fixed point is called the centre of the circle.
CENTRE = O
![Page 5: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/5.jpg)
O
The distance from centre to any point on the circle is called radius of the circle.
A
RADIUS = OA
Radius
![Page 6: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/6.jpg)
.ODI AMETER
A Line segment passing through the centre of the circle and whose end points lie on the
circle is called the diameter of the circle.
A
B
DIAMETER = AB
![Page 7: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/7.jpg)
.O
The length of the circle or the distance around it is called circumference of the circle.
![Page 8: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/8.jpg)
.OA B
A Line segment whose both the ends touches the circumference and passes through the centre is called diameter.
DIAMETER : AB
![Page 9: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/9.jpg)
Relation between radius and diameter
.OA B
RADIUS = DIAMETER
2
OB = AB
2
![Page 10: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/10.jpg)
Eg. If diameter of the circle is 10 cm then find its radius?
.ODiameter = 10cm
Sol. Radius =diameter / 2 radius=10 cm/ 2 radius =5 cm
A B
![Page 11: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/11.jpg)
.O
Eg. If radius of the circle is 6 cm,then find the diameter of the circle?
Radius = 6cmA
Sol. Diameter = 2 x Radius
Diameter = 2 x 6cm
Diameter = 12 cm
![Page 12: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/12.jpg)
RELATION BETWEEN CIRCUMFERENCE AND DIAMETER
.ODIAMETER
CIRCUMFERENCE = 3 x DIAMETER(APPROX)
A B
![Page 13: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/13.jpg)
Eg. Find the circumference (approx) of the circle whose diameter is 10cm.
.ODIAMETER=10 CM
Sol. Circumference = 3 x diameter(approx)
Circumference = 3 x 10 cm
Circumference = 30 cm
A B
![Page 14: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/14.jpg)
EVALUATION1. what is the relation between radius and diameter of the circle?
.OA B
2. What is the relation between circumference and diameter of the circle?
3. In this figure
Sol .Radius=diameter/2
Sol. Circumference=3Xdiameter(approx)
radius
diametercentre
AB is ________.
O is _________.
OA or OB is ______.
![Page 15: The Circle By Ranjana O A CIRCLE Eg. ball,bangle,lemon.coin](https://reader034.vdocuments.site/reader034/viewer/2022051113/56649d9c5503460f94a85572/html5/thumbnails/15.jpg)
This powerpoint was kindly donated to www.worldofteaching.com
http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.