WebDec 22, 2024 · To calculate the radius of a circle, divide its circumference by 2π; for the circle's diameter, divide the circumference by π. Let's say that the circumference of a given circle is 20 inches. Therefore, its radius is 3.18 in and diameter 6.37 in. WebOct 8, 2012 · In 200 BCE, after all, Eratosthenes calculated the circumference of the earth to within one percent of its actual girth. He figured that one degree of latitude was equal …
Equator Definition, Location, & Facts Britannica
WebJul 3, 2024 · Remarkably, Eratosthenes determined the circumference to be 25,000 miles, just 99 miles over the actual circumference at the equator (24,901 miles). Although Eratosthenes made a few mathematical errors in his calculations, the, canceled each other out and yielded an amazingly accurate answer that still causes scientists to marvel. WebJan 22, 2024 · A great circle is defined as any circle drawn on a globe (or another sphere) with a center that includes the center of the globe. Thus, a great circle divides the globe into two equal halves. Since they must follow the circumference of the Earth to divide it, great circles are about 40,000 kilometers (24,854 miles) in length along meridians. raymond 425-c40qm specs
Calculating the Circumference of the Earth Science Project
WebIf the earth is a globe, and is 25,000 English statute miles in circumference, the surface of all standing water must have a certain degree of convexity—every part must be an arc of a circle. ... (9.7 km) to … WebJan 11, 2024 · Compute the radius from the circumference: r = c / (2 × π) ≈ 1.59. Apply the formula volume = (4/3) × π × r³ with r = 2. We obtain volume = (4/3) × π × 1.59³ ≈ 16.89. How to find radius of sphere given volume? We need to solve the formula volume = (4/3) × π × radius³ for radius: Divide both sides by (4/3) × π. We get 3/ (4π) × volume = radius³. WebJan 20, 2024 · According to the ball-Earth theory, the circumference of the Earth at 37.5 degrees Southern latitude should be only 19,757 statute miles, almost six thousand miles less than such practical measurements. simplicity 8671