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Why is it not possible to work out the accurate area of a circle when given its diameter?
The formula for the area of a circle is pi times the radius squared. The number pi is only used in an approximate form, since the decimal expansion of pi is infinitely long and non-repeating. Consequently, all calculations of the area of a circle are also approximate. However, you can be as accurate as you want to be. Pi has been calculated to thousands of decimal places, which is ridiculously more than you would ever need for any practical purpose. In most cases, the approximation of pi as 3.14 is close enough. Your result will be accurate, it just won't be 100% accurate.
What else can I help you with?
What is diameter in geometry?
diameter refers to the area across a circle through its center. it is the longest chord possible for any given circle.
Given a circle with a diameter of 4 what is the circumference?
Given a circle with a diameter of 4, the circumference is: 12.6 (diameter x Pi = circumference).
What is the formula for the diameter or a circle?
If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi
How do you find the DIAMETER if given the circumference OF A CIRCLE?
Diameter of a circle = circumference/pi
What is the radius of a circle with a given diameter?
Radius = Diameter/2.
Diameter of circle with given circumference?
Divide the circumference by pi (about 3.1416). The result is the circle's diameter.
What is the radius of a circle 26.4 cm?
The radius of a circle is the distance from the center of the circle to any point on its circumference. If the radius of a circle is given as 26.4 cm, then that means the distance from the center to the edge of the circle is 26.4 cm. This measurement is constant for any point on the circle, as all points on the circumference are equidistant from the center.
What fraction of the diameter is the radius of a circle?
the radius is half of the diameter
How do you calculate the radius given the diameter?
Radius of a circle = diameter/2
How do you find the radius of a circle when the diameter is given?
Divide the diameter by 2.
If the area of a circle is given as 67cm squared find the diameter and then circumference of this circle?
If the area of a circle is given as 67cm squared, the diameter is 9.236 cm and the circumference is 29.02 cm
What is the formula for the circumference of a circle given a diameter?
C=Pi x diameter
