SPHERE A Sphere is a perfectly round geometrical

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SPHERE A Sphere is a perfectly round geometrical object in 3 -D space that

SPHERE A Sphere is a perfectly round geometrical object in 3 -D space that is the surface of a completely round ball.

PROPERTIES OF A SPHERE It is perfectly symmetrical. All points on the surface are

PROPERTIES OF A SPHERE It is perfectly symmetrical. All points on the surface are from the same distance from the center. It has no corners. It is not Flat.

SURFACE AREA & VOLUME OF A SPHERE The surface area of a sphere of

SURFACE AREA & VOLUME OF A SPHERE The surface area of a sphere of radius R = 4πR^2 Volume of a sphere of radius R = (4πR^3)/3 NOTE: The sphere has the smallest surface area of all surfaces that enclose a given volume, and it encloses the largest volume among all closed surfaces with a given surface area.

SPHERE IN NATURE The sphere appears in nature whenever a surface wants to be

SPHERE IN NATURE The sphere appears in nature whenever a surface wants to be as small as possible. Example: bubbles and water drops.

THE EARTH The Planet Earth, our home, is nearly a sphere, except that it

THE EARTH The Planet Earth, our home, is nearly a sphere, except that it is squashed a little at the poles. It is a spheroid, which means it just misses out on being a sphere because it isn't perfect in one direction.

HEMISPHERE A sphere is divided into two equal hemispheres by any plane that passes

HEMISPHERE A sphere is divided into two equal hemispheres by any plane that passes through its center.

SURFACE AREA OF A HEMISPHERE The total surface area of a hemisphere is the

SURFACE AREA OF A HEMISPHERE The total surface area of a hemisphere is the sum of the area of half the sphere and the area of the circle,

HALF OF THE EARTH The equator divides the Earth in half. The equator is

HALF OF THE EARTH The equator divides the Earth in half. The equator is like a belt that goes around Earth's middle. The top half of the Earth is called the Northern Hemisphere. The bottom half of the Earth is called the Southern Hemisphere.

SOME EXAMPLES OF HEMISPHERE A bowl is the shape of a hemisphere. Half of

SOME EXAMPLES OF HEMISPHERE A bowl is the shape of a hemisphere. Half of a Coconut is also a hemisphere. An eggshell that is broken in two half pieces from the middle is also a hemisphere.

REFERENCES 1. https: //www. mathsisfun. com/geometry/sphere. html 2. http: //www. chegg. com/homework-help/definitions/sphere-and-hemisphere-63 3. https:

REFERENCES 1. https: //www. mathsisfun. com/geometry/sphere. html 2. http: //www. chegg. com/homework-help/definitions/sphere-and-hemisphere-63 3. https: //www. edhelper. com/Reading. Comprehension_54_3895. html 4. https: //en. wikipedia. org/wiki/Sphere 5. Image Source: Google 6. GIF source: Giphy

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