Radius is connected to its centre through the lines , and "r" depicts the length of the radius of that particular circular line. Ellipse is a special case of a circle with a set of points with a constant sum of the distance between the two fixed points in a plane.
These two fixed points are known as focus and centre, which are the same in the case of a circle. In the inner circle, one can find three sets of points that are not present in the same direction, which defines a triangle's edges. Some examples of the circle are disc, clock, etc. The sphere is a kind of line that contains various properties such as surface area, volume, and radius.
It is an asymmetrical surface with one exterior only. The radius of a sphere links the midpoint to the outermost part. The diameter of the sphere starts from one edge to another, passing through its centre. The sphere consists of small circles and several hemispheres. A circle formed by the intersection of the sphere and the plane that passes through the centre of the space is known as the sphere's largest circle.
The radius of the Earth is usually given as 6 kilometers. One can only calculate the surface area of a circle whereas it is possible to calculate the volume of a sphere. Difference between Circle and Sphere Distinguish, differentiate, compare and explain what is the Difference between Circle and Sphere. Circle A circle is formed by a point moving around a fixed point the centre at a constant distance. An interval joining two points on the circle is called a chord.
The examples of sphere in nature are bubbles, planets and small water drops. A sphere is a solid figure that is completely round, with every point on its surface at an equal distance from the centre. Image Courtesy: basic-concept-in-geometry. Difference between Circle and Sphere. Key difference: Both, circles and spheres are circular objects. A circle is a two-dimensional figure, while a sphere is a three-dimensional figure.
The terminology of a circle includes the following definitions: Centre: the point equidistant from the points on the circle. Radius: a line segment joining the centre of the circle to any point on the circle itself; or the length of such a segment, which is half a diameter. Diameter: a line segment whose endpoints lie on the circle and which passes through the centre; or the length of such a line segment, which is the largest distance between any two points on the circle.
It is a special case of a chord, namely the longest chord, and it is twice the radius. Circumference: the length of one circuit along the circle. Chord: a line segment whose endpoints lie on the circle.
A circle and a sphere are two different shapes. The important differences between a circle and a sphere are as follows:. The area covered by the outer surface of the sphere is known as the surface area of a sphere. The surface area of a sphere is the total area of the faces surrounding it. The surface area of a sphere is given in square units. Hence, the formula to find the surface area of a sphere is:.
Check out the surface area of the sphere section for more details. The volume of a sphere is the measure of space that can be occupied by a sphere. We can determine the volume of a sphere if a string runs along the diameter of a circular disc and when rotated along that string.
The unit of volume of a sphere is given as the unit 3. There are two kinds of spheres - solid sphere and hollow sphere. The volume for both these is different. For more details, check out this section on volume of sphere.
In geometry, half of a sphere is known as a "hemisphere". The total surface area and the volume of a hemisphere formula are exactly half of the sphere area and sphere volume. Example 1: Find the diameter and circumference of a sphere with a radius of 7 units.
Therefore, the diameter and the circumference of the given sphere are 14 units and 44 units respectively. Substituting the value of radius in the formula, we get,. Example 3: Find the surface area of a sphere whose radius is 5 units.
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