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What is Circle pi relationship?
Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.
Why is the formula of circle 2pie r?
π was originally known (to the Greeks, I think) as the ratio of the circumference of a circle to its diameter, thus: circumference/diameter = π which with rearranging becomes: circumference = π x diameter However, the diameter of the circle is the distance from one point on its circumference to its centre and then onto another point on the circumference so it is also twice the radius in length, that is: diameter = 2 x radius which can be substituted back into the formula above to yield: circumference = π x 2 x radius or circumference = 2 x π x radius which is usually abbreviated, in algebra, to: circumference = 2πr with r representing the radius of the circle, and π the ratio as previously described.
If a circles radius is 20 inches what is the circumference?
1256 inches ++ Another Answer ++ The formula for finding the Circumference of a circle is C = Pi x D where D is Diameter and Pi is 3.1416. The Radius of a circle is one-half of the Diameter, hence the Diameter of a circle with a 20-inch Radius is 40 inches. Using the formula above, multiply 40 x 3.1416 to find the Circumference: 40 x 3.1416 = 125.664 inches.
What is the circumference of a circle if the diameter is 18 cm?
to find circumference of a circle the equation to use is: 3.14 multiplied by diameterso 3.14 * 18 =56.52THE FORMULA FOR CIRCUM OF A CIRCLE =II(pie)r2the diameter is=18...THE RADIUS =18/2 =9 CM=II 92=81 II CM2IN WORDINGS EIGHTY ONE PIE SQUARE CMAnother AnswerThe formula given above is for the area of a circle. The circumference of a circle whose diameter is known is obtained from the definition of pi, namely, the ratio of the circle's circumferene, C, to its diameter, D.pi=C/D so C=(pi)D =(3.14)(18cm)=56.55cm Roundedisn't there a more simple formula?????????????????????????????????
If the radius of the circle above is 30 mm. What is the circumference of the circle (Use 3.14.)?
188.40 mm
What is Circle pi relationship?
Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.
What a relationship between pi and circle?
Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.
What is the circumference of a 28 cm circle using pi?
If you mean a circle with a diameter of 28 cm, the circumference is 87.96459430051421067695392... using pi to 23 decimal places.* * * * *The answer above implies that the diameter of the circle was measure to an accuracy of 23 decimal places. Very unlikely, I suggest!
Why is the formula of circle 2pie r?
π was originally known (to the Greeks, I think) as the ratio of the circumference of a circle to its diameter, thus: circumference/diameter = π which with rearranging becomes: circumference = π x diameter However, the diameter of the circle is the distance from one point on its circumference to its centre and then onto another point on the circumference so it is also twice the radius in length, that is: diameter = 2 x radius which can be substituted back into the formula above to yield: circumference = π x 2 x radius or circumference = 2 x π x radius which is usually abbreviated, in algebra, to: circumference = 2πr with r representing the radius of the circle, and π the ratio as previously described.
If a circles radius is 20 inches what is the circumference?
1256 inches ++ Another Answer ++ The formula for finding the Circumference of a circle is C = Pi x D where D is Diameter and Pi is 3.1416. The Radius of a circle is one-half of the Diameter, hence the Diameter of a circle with a 20-inch Radius is 40 inches. Using the formula above, multiply 40 x 3.1416 to find the Circumference: 40 x 3.1416 = 125.664 inches.
A diameter of the circle in the drawing above is the segment?
s diameter of the circle in the drawing above is the segment
Can the diameter be bigger than the circumference?
You cannot really compare those two different kinds of values - it's quite nonsense to compare area versus circumference. You could compare numbers but they'll vary depending on your choice of units. Anyway, it's perfectly possible to have shape of area, say, 1 m2 and circumference measured in kilometers - if the shapes perimeter is ragged.
If the diameter is 25.6 what is the circumference?
divide the diameter of 25.6 by 2 to find the radius. The radius is 12.8. The formula to find the circumference is radius squared times pi. 12.8 squared is 163.84 and multiplied by pi is 514.7.. So Circumference = 514.7 The above computation gives the AREA of the circle, not the CIRCUMFERENCE. The CIRCUMFERENCE is 2 times the radius times pi, or the diameter times pi.
How do you find the circumference of a circle from the radius?
Square the radius and multiply the result by 3.14. You may want additional digits of pi for greater precision, but that's the basic idea.The formula is πr² (that's "pi r squared," if the character doesn't show up properly).ANSWER:The above answer is wrong! The above gives the area of a circle, not the circumference. Besides pie are round, cornbread are square. Pi = 3.1416 as stated above.The circumference of a circle is 2 times the radius times pi .This is because pi for all circles is the circumference divided by the diameter. So, pi times the diameter equals the circumference. The diameter is twice the radius.
What is the circumference of the circle round to nearest whole number the circle is 32in a. 50 inches b. 100 inches c. 201 inches d. 304 inches?
Circumference = Pi * diameterAssuming the "32 inches" mentioned above is the diameter of the circle (and using pi equals 3.14 as a very rough estimate) then the circumference is approximately:3.14 * 32 = 100.48Thus to the nearest option above it is 100 inches.
How do you get the circumference of the earth?
The average radius of the Earth is 3,959 miles. The equitorial diameter of the Earth is about 7,926 miles. The ratio of the circumference to the diameter of a circle is written as the symbol pi. Pi is approximately 3.141592. Therefore, to determine the circumference from the diameter given above: equitorial diameter x 3.141592 = equitorial circumference = 7,926 x 3.141592 = 24,900 = The earth has a circumference of approximately 24,900 miles. More precisely the circumference of the earth at the equator is 24,902 mi. Remember that the earth is not a completely rounded sphere.
What is the retationship between the circumference and the diameter?
What is the relationship between the circumference and the diameter? Answer The circumference divided by pi gives the diameter. d = C / pi An alternate way to express the above answer. For all circles, pi is the ratio of the circumference to the diameter pi = C / d
