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A sphere is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball Like a ...


Animated demonstration of the sphere suurface area calculation.


The Greek mathematician Archimedes discovered that the surface area of a sphere is the same as the lateral surface area of a cylinder having the same radius ...


From the Fun Fact files, here is a Fun Fact at the Medium level: Surface Area of a Sphere. The area of a disk enclosed by a circle of radius R is Pi*R2.


This topic is part of the TCS FREE high school mathematics 'How-to Library', and will help you to find the surface area of spheres, or the radius if the surface ...


Surface Areas. cube = 6 a2. prism: (lateral area) = perimeter(b) L (total area) = perimeter(b) L + 2b. sphere = 4 [pi] r2. Supporters: Online Education ...



The formula for the volume of a sphere is V = 4/3 πr³. See the formula used in ... Studying for a test? Prepare with these 4 lessons on Volume and surface area.


To prove that the surface area of a sphere of radius r is 4πr2, one straightforward method we can use is calculus. We first have to realize that for a curve ...


A sphere is a body bounded by a surface whose every point is equidistant (i.e. the same distance) from a fixed point, called the centre. For example, a shot (a ...