Earth has a diameter at the Equator of about 12,756 kilometers (7,926 miles), making it the fifth largest planet in the solar system. Earth’s mass is about 5.97 ⨉ 10 24 kilograms. Dividing this mass by Earth’s volume results in an average density of approximately 5,517 kilograms per cubic meter. This density reflects the composition of Earth’s interior, which is composed of elements ...
An asteroid estimated to be roughly 525 feet (160 meters) in diameter, or about 30 feet (9 meters) shy of the height of the Washington Monument in Washington, D.C., will zoom past Earth early ...
In more modern usage, the length of a diameter is also called the diameter. In this sense one speaks of the diameter rather than a diameter (which refers to the line segment itself), because all diameters of a circle or sphere have the same length, this being twice the radius.
In this guide, we’ll explore what a diameter is, different ways to measure it, and real-life examples. You’ll also get a chance to practice your skills and answer some of the most common questions students have about diameters. What Is a Diameter?
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