Volume and Surface Area of Prisms

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 Volume:

The Volume of prisms can be calculated by multiplying area of cross-section and length.

formula - area of cross-section * length 

Area of cross-section: it the area where you via the shape and the shape and area remains same 

 
Different formulas are used for different area cross-section, here are few examples:
Area of cross-section of a cylinder: π*r^2
Volume of a cylinder: Area of cross-section of a cylinder * length
where: 
r=radius

Surface Area:

Surface area of a 2-d shape is adding area of it's all sides.

But there are formulas for few:
surface area of a cylinder: =area of circle*2 + area of rectangle 
                                           =2πr^2 + 2πrh 
here:
length- 2πr


 


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