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Who first accurately calculated the circumference of the Earth?
Wiki User
∙ 13y ago
Eratothsenes Follow the link to his very cool project
The Ancient Greeks - and they got it right, which was more than Columbus did!
The Greek mathematician Eratosthenes calculated the circumference of the Earth fairly accurately over 2300 years ago!
Eratosthenes was the first person to do this. He measured the distance netween two points and the different angles mad by the Sun - and worked out from these. His result was surprisingly accurate.
Wiki User
∙ 13y ago
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When would you want to find the circumference of a circle?
The first step to calculate circumference of a circle is to know the formula. There are two formulas that can be used for the purpose. They are:Circumference of a circle formula 1: C = π x diameterCircumference of a circle formula 2: C = π x 2 radiusHere are a few illustrations that would make problem solving related to finding the circumference of a circle easy:Using the Radius:If the value of the radius is known then it can be put in the 'circumference of a circle equation' already mentioned and the value calculated. For example:Given that the radius of circle is 3 cm.Circumference of the circle: C= π x 2 radiusor, C= 3.14 x 2 (3) cmor, C= 18.84 cmUsing the Diameter:If the value of the diameter is known it can be directly put in the 'circumference of a circle equation' and the circumference calculated. For example:Given that the diameter of a circle is 6 cm.Circumference of the circle: C= π x diameteror, C= 3.14 x 6 cmor, C= 18.84 cm
If the circumference of a circle is 32pi what is the area of the circle?
First find the radius by dividing the circumference by 2pi which works out as 16 units. Area = pi*radius2 Area = 256pi square units
When was the first 100 digits of pi calculated?
1706
What is the circumference of a circle if its radius is 14cm?
First, we should note that the formula for circumference is Dπ, or diameter times pi. Second, we should note that the diameter is simply double the radius. With this in mind, the circumference formula can then be turned into (2r)π C=2(14)π C=28π which is about equal to 87.96459
What is the circumference if the area is 379.94 cm square?
The first step is to work out the radius. The formula for area is pi(r2). That equals 379.94, so plug this into the equation and you get a radius of 10.997. The formula for the circumference is pi(2r). Plug the now known radius in and you get 69.097516968554117299881726353374 Therefore the circumference, if the area is 379.94cm2, will be 69.1cm
Who invented area and circumference of a circle?
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.
Which Indian astronomer first calculated accurately the time taken by earth to orbit sun?
Bhaskaracharya
When was the the circumference of the Earth first measured and by who?
One possible person is Eratosthenes of Cyrene ~230 BC as he was a Greek scientist who calculated the circumference of the Earth, with remarkable accuracy (some values for the "stadia" he used gives a result within 6% of the actual polar circumference). See link for further information
Who first estimated the circumference of the Earth?
erathosthenes was the first ,
Who was the first person to calculate the earth circumference?
Eratosthenes
What are facts on Eratosthenes?
Eratosthenes was a Greek mathematician and astronomer, named chief of the Library of Alexandria. He is recognized as the first person that calculated the circumference of Earth, he did it by his own rudimentary means and the results were quite accurate.
Who was killed for saying that the earth is round?
The round shape of the Earth was discovered by the ancient Greeks around 500 B.C. The first proposal about the Earth's shape was from Pythagoras.
Who discovered the earths curcumference?
Eratosthenes was the first to measure the Earth's circumference pretty acurately.
Contribution of eratosthenes?
Eratosthenes had many contributions : he was the first person to calculate the circumference of the earth he invented latitude and longitude he was the first person to prove earth was round he was the first to calculate the tilt of Earth's axis
How do scientists calculate earth?
By measuring, and making observations. The first to make a significant calculation about the Earth was Eraosthenes, who measured the circumference of the Earth in about 200 BC.
How did the ancient Europeans use geometry?
The ancient Europeans (or more accurately, the ancient Greeks) produced the "Father of Geometry", Eratosthenes of Cyrene, born in 276 BC. He used his knowledge and discoveries in Geometry to accurately calculate the circumference of the Earth. A little later, he also accurately calculated the 'tilt' of our planet. He also correctly calculated - at a time when no-one had ever travelled there - that the poles of the earth must be very cold and that from there to the Equator the climate would gradually change from moderate to tropical. He also drew the first surprisingly correct map of the Mediterranean countries and the Middle East. He got his map so precise because he also invented the system of paralleles and meridians in geometry. This made it possible to make exact calculations of the location of any landmark on the planet and the distances between them. He also calculated that the correct duration of one year was 365 days and the necessity of leap years every 4 years.
What did eratosthenes create?
He invented the system of longitude and latitude.He was too the first person who calculate the circumference of the Earth.
