#### Transcript of The Surface Area Project

**The Surface Area Project**

Triangular Pyramids

To find the Surface Area of triangular pyramid it would need to follow the formula:

SA= B+1/2Pl

B: Area of base

P: Perimeter of base

l: slant

Rectangular Prism

For finding the surface areas of a rectangular prism, you would need to find the area of the top and bottom rectangles, then find the area of both sides, then the area of the ends. After you have done all of that, you would need to add all of that numbers and then you would have the surface area.

Triangular Prisms

For finding the surface areas of a triangular prism, you would need to find the area of the center rectangle, the left and right rectangles, and the triangles. After you have done all of that, you would need to add all of the numbers and then you would have the surface area.

Rectangular Pyramids

To find the surface area of a rectangular pyramid you would need to follow the formula:

SA= B+1/2Pl

B: Area of base

P: Perimeter of base

l: slant

Go further! More examples and more problems:

Go to http://www.math.com/tables/geometry/surfareas.htm

Example

SA=2lh+2lw+2hw

SA= 2(6x4)+ 2(4x5) + 2(6x5)

SA= 48+ 40 + 60

SA= 148 cm squared

Example

SA= 3lw + 2 (1/2) bh

SA= 3(8x12) + 2(1/2) 8x3

SA= 288 + 24

SA= 312 cm squared

Example

SA= B + 1/2Pl

Example

SA= B + 1/2Pl

SA= (8x8) + 1/2(32x10)

SA= 64+ 160

SA= 224 in squared

There was a triangular pyramid with the slant of 5 in and sides of the base all equaling 4 in.

SA= (4x4) + 1/2(16x5)

SA= 16 + 40

SA= 56 inches squared

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