It would be 4 times the area of one side. The area of one side is found by multiplying 1/2 the length of the base times the height.
4 x (1/2B X H)
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Suppose that the area of the rectangular base is: lw then if the height is: h the surface area is: lw + lh + wh I believe that formula is for the surface area of a rectangular prism...
The first comprises one rectangular face and four triangular faces whereas the second has two triangular and three rectangular faces.
Formula: S = 2B + L
Using the dimensions you're given and those that you can calculate . . .-- Calculate and write down the area of each face of the pyramid.-- Then add up all of the individual areas.-- The sum is the surface area of the pyramid.
what is the surface area of the retangular priamd 13 13 13