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Circumference of a circle, also known as perimeter of circle is defined as the enclosing boundary of a curved geometrical figure called a circle. Visit BYJU'S to learn definition and formulas.
- 5 min
- The circumference of a circle is defined as the linear distance around it. In other words, if a circle is opened to form a straight line, then the...
- To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplyin...
- The formula for circumference = diameter × π Or, diameter = circumference/π So, the diameter of the circle in terms of circumference will be equal...
- Circumference = 2×π×r C = 2×3.14×24 C = 150.72 inches
- Step 1: Find the radius using the area of the circle formula (A = πr 2 ). Step 2: Now, substitute the radius value in the circumference formula (C...
- If the area of a circle is given, then the formula to calculate the perimeter or a circumference of a circle is given by: C = 2√(πA) units.
- We know that, Circumference = 2πr = 2π(3) = 6π Therefore, the circumference of a circle is 6π cm, if its radius is 3 cm.
- As we know, Circumference of a circle if its diameter is given = π × d units. Substituting d = 7 cm in the formula, we get C = π × 7 = 7π units.
Diameter: Any straight line that passes through the centre of the circle to two points on the perimeter. Radius: Any straight line that originates at the centre of a circle and ends at the perimeter. Chord: A straight line whose ends are on the perimeter of a circle.
- What Is A perimeter?
- How to Find Perimeter
- Real – World Applications
- Solved Examples on Perimeter
In geometry, the perimeter of a shape is defined as the total length of its boundary. The perimeter of a shape is determined by adding the length of all the sides and edges enclosing the shape. It is measured in linear units of measurement like centimeters, meters, inches, or feet. Let’s try to calculate the perimeter of the following shape: Perime...
Perimeter of a Regular Shape
We know that the length of each side of a regular polygon is the same. Therefore, Perimeter of regular polygon = sum of all its sides = number of sides ✕ length of one side. For example, look at the given regular pentagon. The perimeter of the given regular pentagon can be calculated as follows: Number of sides = 5 Length of one side = 4 cm Therefore, Perimeter = number of sides ✕ length of one side = 5 ✕ 4 = 20 cm The given table summarizes the formulas to find the perimeter of some regular...
Perimeter of An Irregular Shape
Since the sides of an irregular polygon may not all be the same in length, we use the general formula to find the perimeter of an irregular shape. Therefore, Perimeter of irregular polygon = sum of all sides.
We often use the concept of perimeter in real life. For example, when putting up Christmas lights around the house or when we want to put a fence around the backyard, we find its perimeter to know the length of wire we will need.
Example 1: What is the perimeter of the given figure? Solution: We know that the perimeter of a triangle is given by Perimeter = a + b + c, Where a, b, c = length of three sides. Therefore, For the given triangle, Perimeter = 5 cm + 4 cm + 3 cm = 12 cm Example 2:Calculate the perimeter of the following figure. Solution: The given shape is an irregu...
The circumference of a circle is the measurement of how far the distance goes around the circle. We can think of it as the “perimeter” of the circle because it is literally the measure of the length of the circle’s boundary.
Perimeter is the distance around a two-dimensional shape. Example: the perimeter of this rectangle is 7+3+7+3 = 20. Example: the perimeter of this regular pentagon is: 3 + 3 + 3 + 3 + 3 = 5×3 = 15. The perimeter of a circle is called the circumference: Circumference = 2 π × radius.
Circumference (Perimeter) of a circle. The distance around the edge of a circle. Also 'periphery' , 'perimeter'. Try this Drag the orange dots to move and resize the circle. The circumference is shown in blue. Note the radius changes and the circumference is calculated for that radius. Options.
Circumference of a Circle: Definition. The circumference is the length of the boundary of a circle. It is also known as the “perimeter” of a circle. Since it represents length, it is measured in units of lengths such as feet, inches, centimeters, meters, miles, or kilometers.
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