Pi (π) is a special mathematical constant; it is the ratio of circumference to diameter of any circle. where C = π D. C is the circumference of the circle. D is the diameter of the circle. For example: If the radius of the circle is 4cm then find its circumference. Given: Radius = 4cm. Circumference = 2πr = 2 x 3.14 x 4 = 25.12 cm. Also, check:

Hence, the area of the circle is 803.84 square centimeters and the diameter of the circle is 32 centimeters. Example 2: The area of a circle is 12.56 square centimeters. Find the diameter of the circle. (Take the value of \(\pi\) to be 3.14) Solution: Use the …

The circumference of a circle is 36 cm. Calculate the diameter of a circle. Solution: Given: Circumference, C = 36 cm. We know that, D = C/π. Now, substitute C = 36 cm and π= 3.14 in the formula, D = 36/3.14. D = 11.5 (approximately) Hence, the diameter of a circle is approximately equal to 11.5 cm. Example 3: Determine the diameter of a ...

Circumference of a circle is given by. 2 π r = 2 × π × 8 = 50.272 cm. Example 2. Find the diameter, area and circumference of a circle of radius 15 cm. Solution. Given parameters are. Radius of a circle, r = 15 cm. Diameter of a circle is given by. 2r = 2 × 15 = 30 cm. Area of a circle is given by. π r 2 = π ×15 2 = π × 225 = 706.95 ...

The diameter of a circle is a line that passes through the center and meets the circumference at both ends. The diameter of a circle is twice the radius. The product of the constant value and the diameter of the circle gives the circumference. Circumference of a circle, C = 2\(\pi r\) or. Circumference of a circle, C = \(\pi\) d The terms ‘r ...

The circumference formula of a circle is obtained by multiplying the diameter by pi(π). To recall, the circumference of a closed curve or circular object is the distance around its edge. The circumference of a circle has special importance in geometry and trigonometry.

Diameter Formula. Diameter is defined as the line passing through the center of a circle having two extremes on the circumference of a circle. The Diameter of a circle divided the circle into two equal parts known as semi-circle. The center of a circle is the midpoint of its diameter.

The diameter of a circle is the distance between two points on the boundary of a circle, and a line connecting these two points always passes through its center. The diameter is represented by ‘d’ and is twice the length of the radius of a circle, that is,

A chord passing through the center of a circle is known as the diameter of the circle and it is the largest chord of the circle. This diameter is twice that of the radius of a circle i.e. D=2r, where ‘D’ is the diameter and ‘r’ is the radius. Radius of a circle = Diameter/2 Or. Diameter of a circle = 2 x Radius. Equation

The diameter of the circle divides it into two equal parts. Circles which have equal radii are congruent to each other. Circles which are different in size or having different radii are similar. The diameter of the circle is the largest chord and is double the radius. Video Lessons on Circles Circles – One Shot Revision