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how to find the total surface area of a rectangular prism formula. The surface area of a rectangular prism formula is. A bh L s1 s2 s3 Where A is the surface area b is the bottom edge of the base triangle h is the height of the base triangle L is the length of the prism and s1 s2 and s3 are the three edges of the base triangle.
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Surface area of prism 2 area of base perimeter of base height of prism. Base Surface Area a 2. So the surface area of a square pyramid area of the square base 4 area of the triangle.
A 2 wl lh hw A 2 w l l h h w.
We then add up all the areas to get the total surface area. A 2 10 x 25 20 x 25 20 x 10 A 1900 ft 2 of plywood needed Register to view this lesson. SA 2 l w 2 l h 2 w h SA 2 4 5 2 4. Surface Area 2lw lh.
