He or She estimated it by building off of Henry Cavendish,Galileo,& Sir Isaac Newtons Ideas.
It is hard to know for sure, but it is estimated to be about 240 million miles wide. If it was where our sun is, it would be big enough to extend beyond the planet Mars.
you will suddenly only weigh 1/6 th of what you weigh on earth....so if you weighed 240 on earth with your spacesuit...once you hit the moon you will only weigh 40 pounds due to the difference in gravity
This is hard to go through without a drawing, but let's try it: Draw the earth as a circle, with a center. Indicate the ISS with a dot. Draw a line from the earth's center to the ISS. Draw a line from the ISS tangent to the earth's surface. Draw the radius from the earth's center to the ISS horizon (the tangent point). A corollary in geometry tells us that a radius is perpendicular to a tangent. This is very helpful ... we know we have a right triangle. Hypotenuse is the line from the center to the ISS; its length is (earth radius)+(ISS altitude) = 3,970+240 = 4,210 miles. One leg = earth radius = 3,970 miles Other leg = distance from ISS to the horizon = sqrt[ hypotenuse2 - leg2 ] = sqrt(42102-39702) = 1,401 miles (rounded)
Since Betelgeuse is a nearby star (compared to the size of the galaxy, that is), you can assume that it takes about the same time as our Solar System to orbit the galaxy - approximately 240 million years.
The Space Shuttle typically orbited the Earth at an altitude of about 150 to 400 miles (240 to 640 kilometers).
By 500 B.C., most ancient Greeks believed the Earth was round, not flat. But they had no idea how big the planet was until about 240 B.C. when Eratosthenes came up with a clever way to estimate the Earth's circumference.
Eratosthenes lived from ~ 276 BC - c. 195 BC. In the text In On the Circular Motions of the Celestial Bodies, Cleomedes credited him with having calculated the Earth's circumference around 240 BC, which would have made him around 36 years old at the time. For his part, Cleomedes wrote his text between between the mid-1st century BC and 400 AD (although probably between about 100 BC and 100 AD), so he was writing about a measurement that occurred hundreds of years in the past so we can only consider the 240 BC date as a reasonable estimate rather than established fact.
I'm not sure exactly what you're asking here. Perhaps you are referring to Eratosthenes of Cyrene, the greek scientist who estimated the circumference of the earth by measuring the shadows of sticks in around 240 BC?
Eratosthenes' method requires that one know or determine the vertical angle of the sun above the horizon or from the zenith (a point directly overhead) at solar noon at two locations along the same line of longitude. The distance between the two locations must also be known.
There is conflicting evidence about this. It is fair to say that some of the ancient Egyptians realised the earth must be round while most of them believed it to be flat. The earliest known calculation of the earth's circumference was made by Eratosthenes, a Greek mathematician, around 240 BC.
To the nearest ten, 240
If the image is 800 pixels by 600 pixels at 240 pixels per inch, then the image size is (800 / 240) by (600 / 240) or 31/3 by 21/2 inches.
The front end estimate is 200. But estimating a single number, in isolation and without context, is a complete waste of time. It all comes down to the context of what needs to be done with the number.If I had to add 244 to 1 trillion, I would estimate it as 0.If I had to add 244 to 0.0000000001, I would use the number as given, or possibly 240. If I had to divide it by 4, I would estimate it as 240, because 240/4 = 60. If I had to divide it by 5, I would estimate it as 250, because 250/5 = 50.
4 inches
If the size is 30 inches x 8 inches then the area = 30 x 8 = 240 square inches. If the size was in feet, multiply 240 by 144.
four inch
120, 240, 55