The volume of a triangular pyramid can be found using the formula Volume=Base Area x height /3. Surface Area can be expressed as Surface Area =Base Area+0.5 x perimeter x side length.
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The tiangular prism, but now known as the pyramid has 4 edges and 6 faces also 4 vertices. Hope it was what you were looking for. If not just press the thumbs down. It is somewhere down. So bye.
first you find the area of the base and then you find the area one side of the pyramid an you time it with 3 if it is a triangular pyramid or 4 if it is a square pyramid
1/3 base x height
Formula for volume of pyramid is 1/3*base area*height Formula for area of rectangle (in this case the base) is length*breadth So, the volume of the pyramid is 1/3*12*5*9=180m3
The formula to find the volume of a triangular pyramid is: 1/3 (1/2 B H ) H