Wiki User
∙ 11y agoIt 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.
Wiki User
∙ 11y agoFirst, 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.
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.
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.
To calculate the volume of an arc, you first need to determine the shape of the arc (e.g., it could be a sector of a circle). Once you know the shape, use the appropriate formula for calculating the volume of that shape, such as the volume of a sector of a circle or a segment of a sphere. Calculate the volume based on the given measurements of the arc.
Frank boreman, bill andres and jim lovell were the first.
To calculate the volume of dirt needed to fill a circular area, you first need to find the area of the circle (πr^2, where r is the radius). In this case, for a 14-foot circle, the radius is 7 feet. Once you find the area, you can calculate the volume of dirt needed based on the desired depth of filling the circle.
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.
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.