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What is the circumference of a circle if the radius is two over three?
Wiki User
∙ 12y ago
pi * (2/3) * 2 =~ 4.1887902047863909846168578443727
Wiki User
∙ 12y ago
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What is the circumference of a circle if radius is 4 feet?
A little over 25 feet ( 8 X Pi )
Does the area of a circle equal pi?
no, the area of a circle equals pi times the radius squared or circumference times diameter over four.
What is the circumference of a circle with the radius of 5 mm?
circumference = diamiter times pie 3.14 times 10 move the decimal over once its 31.4
What fraction of the area of a circle of radius 5 lies between concentric circles of radius 3 and 4?
The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.
How do you calculate the circumference and area?
for circumference you multiply diameter by pi (22 over 7 or 3.14) and for area you do radius (half of diameter) multiplied by itself then multiplied by pi. if you want volume you can multiply the height of the cylinder by the area of it's circle.
What is radius of circle with a circumference of 31 feet?
Circumference of a circle = (pi) x DiameterDiameter = 2 x radiusCircumference = (pi) x (2 x radius)(2 x radius) = Circumference/piRadius = Circumference/(2 x pi) ==> Over to you.
What are pi and radius?
Pi - the circumference of a circle over the diameter of a circle. Pi is constant and will always be 3.14. Radius - any line segment in a circle that extends from the center of the circle to the perimeter of the circle. Radius is half the diameter.
What is the circumference of a circle if radius is 4 feet?
A little over 25 feet ( 8 X Pi )
Does the area of a circle equal pi?
no, the area of a circle equals pi times the radius squared or circumference times diameter over four.
What is the circumference of a circle with the radius of 5 mm?
circumference = diamiter times pie 3.14 times 10 move the decimal over once its 31.4
How do you find the circumfirence of a circle?
The circumference of a circle is the distance all around the edge of the circle. To find the circumference of a circle, you use the formula C equals 2 times pi times r, where pi is equal to 22 over 7 and r is the radius.
What is the circumference of a 12 foot diameter circle?
Circumference= 37.68 feet. All you have to do is multiply the diameter by pi. Same with radius. Multiply the radius by two to get the diameter then do diameter times pi.(pi= 3.14 or 22 over 7.)
What fraction of the area of a circle of radius 5 lies between concentric circles of radius 3 and 4?
The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.
What iS the radius of a circle with circumference?
A circle is a shape with all points the same distance from the center. It is named by the center. The circle to the left is called circle A since the center is at point A. If you measure the distance around a circle and divide it by the distance across the circle through the center, you will always come close to a particular value, depending upon the accuracy of your measurement. This value is approximately 3.14159265358979323846... We use the Greek letter (pronounced Pi) to represent this value. The number goes on forever. However, using computers, has been calculated to over 1 trillion digits past the decimal point.The distance around a circle is called the circumference. The distance across a circle through the center is called the diameter. is the ratio of the circumference of a circle to the diameter. Thus, for any circle, if you divide the circumference by the diameter, you get a value close to . This relationship is expressed in the following formula:where is circumference and is diameter. You can test this formula at home with a round dinner plate. If you measure the circumference and the diameter of the plate and then divide by , your quotient should come close to . Another way to write this formula is: where · means multiply. This second formula is commonly used in problems where the diameter is given and the circumference is not known (see the examples below).The radius of a circle is the distance from the center of a circle to any point on the circle. If you place two radii end-to-end in a circle, you would have the same length as one diameter. Thus, the diameter of a circle is twice as long as the radius. This relationship is expressed in the following formula: , where is the diameter and is the radius.
What is the area of a circle with a circumference of 22 pie over 3?
Circumference = 22pi/3 Radius = Circumference/(2pi) = 22pi/3*1/(2pi)= 11/3 Then area = pi*radius2 = pi*(11/3)2 = 121pi/9 = 42.24 square units.
How do you calculate the circumference and area?
for circumference you multiply diameter by pi (22 over 7 or 3.14) and for area you do radius (half of diameter) multiplied by itself then multiplied by pi. if you want volume you can multiply the height of the cylinder by the area of it's circle.
How to measure the length of an arc betwwn two radii in a circle?
The length of an arc around the circumference of a circle between any two radii, where the angle between the radii is known, is equivalent to the angle over 2*pi*r. Well for direct measurement one can takea circular disk of the same radius of the circle under consideration and move the disk on a measuring instrument (Ruler, scale) in such a way that the point where first radius line cuts the circumference should be zero mark than roll the disk on the scaleto that point where the second radius cuts the circumference. the length of the arc is given by the scale.
