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Sphere Formulas Calculator

In geometry, a sphere is the set of all points in three-dimensional Euclidean space that are located at the radius from the center.


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If the Universe is expanding, are we also expanding?

It can be hard to envisage the fabric of the space-time as an intricate plain system defined by the fundamental forces, especially the gravitational force.


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Cuboid Formulas Calculator

In geometry, a cuboid is a 3D shape which has three different sides and face diagonals. Calculate its volume, surface area and space diagonal.


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Has been the Sun always as bright as it is now?

The Sun will not be as bright as it is now, it will be brighter than we could imagine until it consumes all life by its light surrounding the Earth as fires.


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Decagon Formulas Calculator

A decagon is a ten-sided polygon or 10-gon, which means that it has ten equal side. Calculate its perimeter and area.