I need help finding the perimeter of the prism and pyramid? What do you do to find them?
ex. If I have a prism with bases 4ft and 5ft, how do I get the perimeter?
2007-05-15 13:42:04 · 3 answers · asked by Julia D 1 in Science & Mathematics ➔ Mathematics
If you have a prism, it will have two bases. Rememeber, the bases are what give the prism its distinct shape. The can not be represented by 1 dimensional lengths such as 4ft and 5ft. Your two bases should be two congruent polygons, such as triangles, rectangles, pentagons....
If you are looking for perimeter in a polygon, most likely it is part of a formula that you are using to try to find the Surface Area of the prism.
Surface Area = Lateral Area + Area of two bases.
Lateral Area = Perimeter of Base * height of prism.
To find the perimeter of one of your bases, figure out which shape is the base, and add up the length of all of the sides.
2007-05-15 13:54:17 · answer #1 · answered by scoobedue81 1 · 0⤊ 0⤋
kinda depends on the shape of the base. perimeter is the sum of the sides of a polygon, so add the base edges. If the base is a square, 4x4 = 16 ft. If the base is a hexagon, 6x4 = 24 ft, and so on.
2007-05-15 13:48:08 · answer #2 · answered by Philo 7 · 0⤊ 0⤋
Add all the base sides together to find perimeter
2007-05-15 13:45:15 · answer #3 · answered by richardwptljc 6 · 0⤊ 0⤋