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The cone Volume and surface calculation [Home] [Search] [Forum] [Links] [Contact] [Imprint] [Sitemap]
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Volume The formula for the volume of a cube is similar to the formula of the pyramid. The only diferrence is that the base is not rectangular, but round:
Surface
The surface consists of the base and the coat. The base
is a circle and is calculated as follows:
Now, the area of the circles' segment must be calculated. But to do this, it has to be figured out what part is missing or which is there. So, the perimeter of the base has to be calculated. Afterwards, the perimeter of the circle is calculated with the radius of the segment. What is the quantum of the small circle from the big circle? In other words, what number do I have to multiply with the perimeter of the big circle to get the perimeter of the small circle? Thereto, the perimeter of the small circle has to be divided by the perimeter of the big circle. The result is the number that is then multiplied by the area of the big circle and then the area of the circles' segment is the answer.
A circle section =
The area of circle section (= coat) added to the area of circle of bas is the surface of cone. |
