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how do i find the surface area of a pyramid?

L=6

w=6

H=7.6

 May 31, 2016
 #1
avatar+102 
0

Answer: 134.05

A pyramid is a three-dimensional figure made up of a base and triangular faces that meet at the vertex, V, which is also called the apex of the pyramid.

 

The number of triangular faces depends on the number of sides of the base.  For example, a pyramid with a rectangular base has four triangular faces, whereas a pyramid with a hexagonal face is made up of six triangular faces, and so on.

The lower face ABCD is called the base and the perpendicular distance from the vertex, V, to the base at O is called the height of the pyramid.  The total surface area of a pyramid is the sum of the areas of its faces including its base.

 

Note that: A square pyramid has four equal triangular faces and a square base and A pyramid does not have uniform (or congruent) cross-sections.

 

Hope that this will help you laugh

 May 31, 2016
 #2
avatar+128731 
0

This looks to be a square pyramid.....

 

We need to find the slant height of the sides......this is given by : sqrt [ 7.6^2 +3^2)   =   8.17068

 

So.....the total surface area =   area of the base  +  area of the four congruent triangles comprising the sides =

 

6^2   + 4*(1/2)(6)(8.17068)  =  about 134.048 units^2

 

 

 

cool cool cool

 Jun 1, 2016

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