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how to solve the volume of sphere and the area of a cylinder.

Sagot :

Consider a sphere of radius r, then the volume of the sphere is given by,

[tex]V=\frac{4}{3}\pi\times r^3[/tex]

Here

[tex]\pi=3.14[/tex]

Now let us consider a cylinder of with base radius r and height h, as in the figure,

The area is the total area of the base surface and the niddle surface.

This can be written as,

[tex]A=2\pi(h+r)[/tex]

Consider a sphere of radius 2 cm, the volume can be calculated as,

[tex]v=\frac{4}{3}\times3.14\times2^3=\frac{4}{3}\times3.14\times2\times2\times2=33.49cm^3[/tex]

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