It is not known. The Rhind Papyrus describes how the area of a circle is related to pi where pi was estimated as (4/3)4 ≈ 3.1605 (approx).
The Rhind Papyrus dates from around 1700 BCE. So either very ancient people used pi = 3 or else they were later people who were dogmatically required to use pi = 3.
First, divide your answer by 2 Next, divide that answer by 3.14 Then, multiply that answer by 2 there's your answer
A circle of radius r has a circumference of 2*Pi*r and an area of Pi*r*r, where Pi is the constant which is approximately 3.14159. Use the first equation to calculate the radius and then the second to calculate the area.
He calculated the perimeters of regular polygons inscribed within a unit circle and circumscribing the circle (outside the circle). The first is always less than the circumference of the circle ( = 2*pi) and the second is always more. As you increase the number of sides of the polygons, the polygons get closer and closer to the circle and their perimeters get nearer to the circumference.
To calculate an approximate value for, say 99.55, you could first rewrite it as 1005*(1-0.005)5 and then use the binomial expansion of the first three terms of (1-0.005)5 to get a pretty good approximation - accurate to 1.2 parts in a million! You can calculate the first three terms without a computer if you know your basic times tables.
First calculate the radius (1/2 of the diameter), then use the formula area = pi x r2.
It's not a menstrual "circle" - it's a menstrual cycle. And on another note, you can calculate the menstrual days by marking it down on your calander; from the first day you started.
The circumference and area of a circle, with radius r is: circumference = 2*pi*r and area = pi*r2 Use the first to calculate r and then the second to calculate the area.
First divide by (2 x pi) to obtain the radius. Then calculate the area with the well-known formula for the area of a circle: A = pi x radius2.First divide by (2 x pi) to obtain the radius. Then calculate the area with the well-known formula for the area of a circle: A = pi x radius2.First divide by (2 x pi) to obtain the radius. Then calculate the area with the well-known formula for the area of a circle: A = pi x radius2.First divide by (2 x pi) to obtain the radius. Then calculate the area with the well-known formula for the area of a circle: A = pi x radius2.
First you determine the radius of the circle. If 6.6 feet refers to the diameter, divide that by 2 to get the radius. Then you use the standard formula for the area of a circle.
First, divide your answer by 2 Next, divide that answer by 3.14 Then, multiply that answer by 2 there's your answer
A circle of radius r has a circumference of 2*Pi*r and an area of Pi*r*r, where Pi is the constant which is approximately 3.14159. Use the first equation to calculate the radius and then the second to calculate the area.
Frank boreman, bill andres and jim lovell were the first.
To calculate an approximate value for, say 99.55, you could first rewrite it as 1005*(1-0.005)5 and then use the binomial expansion of the first three terms of (1-0.005)5 to get a pretty good approximation - accurate to 1.2 parts in a million! You can calculate the first three terms without a computer if you know your basic times tables.
He calculated the perimeters of regular polygons inscribed within a unit circle and circumscribing the circle (outside the circle). The first is always less than the circumference of the circle ( = 2*pi) and the second is always more. As you increase the number of sides of the polygons, the polygons get closer and closer to the circle and their perimeters get nearer to the circumference.
The calculation is determined by the bit rate of the file movement, and the bit rate can vary throughout which is why the first approximation regularly differs from the calculations made after.
Well, you can't really "convert" it, but I assumeyou want to calculate the circumference from the area. First, you need to know what figure you are talking about. For the specific case of a circle, I suggest you use the formula for the area of a circle, replace the known area, and solve for the radius. Once you have that, it is easy to calculate the circumference.
Actually, Eratosthenes of Cyrene (276? - 195? B.C.) was the first to calculate the Earth's circumference accurately. He is supposed to be the inventor.