Radius of a circle is any line from the center of the circle to the circumference of the circle. A diameter is the sum of two radius within the circle. Any line apart from the diameter inside the circle is referred to as a chord. The radius of a circle is used for the purpose of ...
Learn to define the radius of a circle. Learn what the radius formula is and how to find the radius of a circle given area, diameter, or...
C $=$πd … circumference of a circle using diameterThis gives us the formula for the circumference of a circle when the diameter is given.Also, we know that the diameter of the circle is twice the radiusor, d $= 2$rSo, replacing the value of d in the above formula, we get:...
Radius: The radius of the circle is a line segment that joins the centre and any point on the Circumference.Diameter: The diameter of the circle is the line segment starting from any point on the circumference of the circle, passing through the centre and ending at the point on the ...
Area of a Circle = πr2 square units A = πr2 square unitsWhere A = the area of a circle. pi (π) = 22/7 or 3.14 and r = the radius of a circle. Let’s get a better understanding of this formula by working out a few example problems. ...
All those points for which the distance is equal to that of the radius of a circle lie on the circle. For example points U and V lie on the circle. Semicircle: Semi means half, so semicircle ishalf a circle. It is formed by cutting a whole circle along a line segment passing through...
There are many parts of a circle that define a circle such as a radius, a diameter, a chord, and so on. Learn more about the parts of a circle, its formulas, and solve a few examples.
The area of a circle is calculated with the help of the formula: Area of circle = πr2. If the diameter is given we can find the radius by dividing the value of diameter by 2. After getting the radius, we can substitute its value in the formula: Area of circle = πr2to get the...
If the area of minor segment of a circle of diameter 28 cm is 206 cm2, then the area of the corresponding major segment is A410 cm2 B412 cm2 C2250 cm2 D2258 cm2Submit The area of segment of a circle of radius α subtending an angle of 2α at the centre is : Aa2(α+12si...
Locate the key parts of the circle for an appropriate circle theorem. Use other angle facts to determine any missing angles. Use Pythagoras’ theorem or trigonometry to find the missing length.Circle Theorem 6: Tangent of a circle The angle between a tangent and radius is 90 degrees. Tangent...