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Well, you never have a perimeter for a circle, you have to find the circumference. The perimeter is the length of the borders of a shape, and a circle has no border. The formula for circumference is, C= Pi multiplied by the diameter. To find the diameter just multiply the radius by two. Pi is a never ending number, but you should use it as 3.14 times the diameter
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How do you calculate the circumference of a circle given the diameter or the radius?
Circumference = diameter*pi
What name is given to the perimeter of circle?
The perimeter of a circle is its circumference
How do you find the perimeter of a circle with radius 5cm?
Do note that the perimeter/circumference of a circle can be found using this formula: πD or 2πr. Hence, with the information given that the circle has a radius of 5cm, the circumference of the circle is: Formula = πD Diameter = Radius x 2 = 5cm x 2 = 10cm π = 3.14 (depending on what the question states π to be) Circumference of the circle = 3.14 x 10cm = 314cm
Given a circle with a radius of 6 what is the length of an arc measuring 60 degrees?
The length of an arc measuring 60 degrees given a circle with a radius of 6 is 2*pi, that is 6,2831 approximately.The perimeter of a circle is calculated with the formula:L = 2 * pi * rwhere L is the perimeter and r the radius of the circle. This is equivalent to calculating the length of an arc measuring 360 degrees. The length of any arc smaller than 360 is proportionally smaller. Given that 60 degrees is 1/6 of the total circle (360), the length of the arc will be 1/6 of the perimeter.2 * pi * 6L = --------------- = 2 * pi6
How do you find the perimeter when circumference is given?
When the shape is a circle, then the perimeter is called"circumference".The circumference IS the perimeter of a circle.
Find the area and perimeter of a given circle?
If 'R' is the radius of the circle, then-- area of the circle is [ pi R2]-- perimeter of the circle is [ 2 pi R ]
How do you calculate the radius given the diameter?
Radius of a circle = diameter/2
How do you calculate the circumference of a circle given the diameter or the radius?
Circumference = diameter*pi
How do you find the area of a circle when the radius is unknown?
By using the other information supplied about the circle to calculate either its radius (from which its area can be calculated) or its area (if the circle is similar to another with a given area and some ratio between the two circle is given):If the diameter is given: radius = diameter ÷ 2If the circumference is given: radius = circumference ÷ 2πIf the circle is similar to another circle which has a given area, and the length ratio is given; square the length ratio to get the area ratio and apply to the given area.
What name is given to the perimeter of circle?
The perimeter of a circle is its circumference
How do you find the perimeter of a circle with radius 5cm?
Do note that the perimeter/circumference of a circle can be found using this formula: πD or 2πr. Hence, with the information given that the circle has a radius of 5cm, the circumference of the circle is: Formula = πD Diameter = Radius x 2 = 5cm x 2 = 10cm π = 3.14 (depending on what the question states π to be) Circumference of the circle = 3.14 x 10cm = 314cm
Given a circle with a radius of 6 what is the length of an arc measuring 60 degrees?
The length of an arc measuring 60 degrees given a circle with a radius of 6 is 2*pi, that is 6,2831 approximately.The perimeter of a circle is calculated with the formula:L = 2 * pi * rwhere L is the perimeter and r the radius of the circle. This is equivalent to calculating the length of an arc measuring 360 degrees. The length of any arc smaller than 360 is proportionally smaller. Given that 60 degrees is 1/6 of the total circle (360), the length of the arc will be 1/6 of the perimeter.2 * pi * 6L = --------------- = 2 * pi6
There are three shapes circle rectangle and square which one has least perimeter?
For a given area a circle has least perimeter. eg Let area = 100 sq cms. For the square or rectangle the perimeter = 40 cms For the circle the radius is square root of 100/3.1416 = 5.64 and the circumference = 2 x radius x 3.1416 = 35.44 cms
How do you find the area of a circle when you are only given its perimeter?
The Perimeter of a circle is it's circumference. And the circumference is the diameter times pi. So to find the area, divide the circumference by pi, and get the diameter. Then divide the diameter by 2, to get the radius. Then multiply the radius times itself, and multiply that by pi.
How do you find the perimeter when circumference is given?
When the shape is a circle, then the perimeter is called"circumference".The circumference IS the perimeter of a circle.
How can you calculate the radius with the area given to you?
Area of a circle = pi x radius squared, so to get the radius, divide the Area by pi (3.14159), and then find the square root of that
What is the perimeter of a circle?
the radius2 x pi x r where pi = 3.1416To find the perimeter you do pi (3.1415) times the diameter.Or you can figure by the radius (P=2 π r; i.e. Perimeter = 2 x 3.1415 x radius)The perimeter of a circle is its circumference. We use these formulas to find the circumference of a circle; C=d times pi or C=2 times the radius times pi (3.14).To make it easier to explain:Area: Pi (3.14) X Radius Squared (r 2) from the center out of the circlePerimeter: Pi (3.14) X Diameter (d) from one side of the circle to the otherThe perimeter of a circle is called Circumfrence.Here is the formula for Circumfrence:C= pi x d (pi times diameter)C= 3.14 x ______ (fill in the blank with the diameter of the circle)C= (your answer)NOTE: Pi is equal to 3.14 so when you are using pi to multiply, replace it with 3.14When the diameter is not given in a circle, double the radius to find the length of the diameter.The perimeter of a circle is its circumferenceThe perimeter of a circle is its circumference
