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Add all four sides.
If you don't know the side lengths then you must know either {height and diagonal from top to bottom-corner} or {diagonal from bottom-center to bottom-corner}. If you know the first two, then use Pythagoras' Theorem to find the second. Now, double that and use Pythagoras' Theorem to find the side length.
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How do you find the perimeter of a base of a rectangular prism?
12 the base times the height
How do you find the perimeter of a rectangular prism?
width*height*length=perimeter of a rectangular prism! :)
How do you find the lateral surface of a triangular prism?
The lateral area [L] of a right prism with base perimeter [P] and height [h] is L=Ph.
How do you find the lateral area of a rectangular prism?
L=PH L=PH Lateral Area= (Perimeter of the base)(the height of the figure)
How do you find surface area and volume of an octagonal prism?
If the octagon at the base is regular, the side of the octagon is s and the height of the prism is h, the area of each octagonal base (Ab) is Ab = 2(√2 +1) s2 The perimeter of the octagon is P = 8s Then the surface area of the prism is As = 2 Ab + Ph The volume of the prism is V = Ab h
