Introduction:
The relationship between the centre and chords in a circle. The locus of a point moves such that its distance from a fixed points always a constant, is called a circle. The fixed point is called its centre and the constant distance is called its radius. The perimeter or boundary of a circle is called its circumference. A line segment whose end points lie on the circumference of a circle is called a chord. A chord from the centre of a circle is called its diameter. A diameter is the longest chord of a circle. All above those concepts is used to solving all types geometry problems.
Example:
2. Find the area of the circle which the radius is 5?(PI=3.14)
Solution: Area of the circle= PI R2
=3.14 * 5*5.
=78.5cm2
2.Find the perimeter of the circle, which Diameter is 8cm?
Solution Diameter = 2 × radius
Radius =Dia/2
=8/2=>4cm
Perimeter of the circle=2*PI*Radius
=2*3.14*4
=25.12 cm2
The relationship between the centre and chords in a circle. The locus of a point moves such that its distance from a fixed points always a constant, is called a circle. The fixed point is called its centre and the constant distance is called its radius. The perimeter or boundary of a circle is called its circumference. A line segment whose end points lie on the circumference of a circle is called a chord. A chord from the centre of a circle is called its diameter. A diameter is the longest chord of a circle. All above those concepts is used to solving all types geometry problems.
Example:
2. Find the area of the circle which the radius is 5?(PI=3.14)
Solution: Area of the circle= PI R2
=3.14 * 5*5.
=78.5cm2
2.Find the perimeter of the circle, which Diameter is 8cm?
Solution Diameter = 2 × radius
Radius =Dia/2
=8/2=>4cm
Perimeter of the circle=2*PI*Radius
=2*3.14*4
=25.12 cm2
| Hope you liked the above explanation. Please leave your comments, if you have any doubts. |
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