Surface Area – The measure of the total area that the object occupies. Which is the collective sum of all areas of different areas of the object. Example Cube has 6 faces each face having an area of side2 , thus surface area is 6* side2.
- Lateral Surface Area
- The sum of areas of all surfaces excluding top and bottom.
- Total Surface Area
- The sum of areas of all surfaces including top and bottom.
Surface Area Visualization
Cuboidal – Above cuboidal has 6 faces and dimensions as L, B, H – Length, Breadth, Height.
The Lateral Surface Area is the area in yellow + purple color.
The Total Surface Area is area in yellow + purple + red color.
List Of Common Used Surface Area Shapes.
|Shapes||Lateral Surface Area||Total Surface Area|
|Cylinder Hollow||2πh(r1+r2)||2πh(r1+r2) + 2π(r12-r22)|
|Hemisphere Hollow||2π(r12+r22)||2π( r12+r22 ) + π(r12-r22)|
|Prism||perimeter of base x height||LSA + 2( Area of base)|
|Pyramid||1/2 (perimeter of base x slant height)||LSA + ( Area of base)|
OTHER TOPICS - NUMBER SYSTEM - PERIMETER, AREA, VOLUME