I need help with a geometry question. The volume is 27, (3x3x3) or lwh, but it ask for the perimeter. How do I find it? Please help me out!
2007-03-31 12:29:57 · 4 answers · asked by Amy C 1 in Science & Mathematics ➔ Mathematics
Perimeter of cube
Cube is a parallelepiped that sides are squares(all sides are equal). So the perimeter of the cube is the number of sides * length. Cube has 12 sides.
So the perimeter formula is:
P = 12a
:)
2007-03-31 12:35:30 · answer #1 · answered by mikedotcom 5 · 0⤊ 0⤋
The perimeter of a cube would probably refer to the combined length of its edges (if you can call that the perimeter). A cube has 12 unique edges. So in a 3 x 3 x 3 cube, each edge is obviously 3 (s = 3). 12 * 3 = 36.
P = 12s
P = 12(3)
P = 36
Its "perimeter" is 36 units.
2007-03-31 12:34:28 · answer #2 · answered by Bhajun Singh 4 · 1⤊ 0⤋
For a 3-dimensional object you would find the surface area instead of the perimeter. In the case of the cube you described it would be6*9=54 square units. Since there are six faces that each have a suface area of 9 square units.
2007-03-31 12:37:10 · answer #3 · answered by bruinfan 7 · 0⤊ 0⤋
You can't find the perimeter, only the surface area. Perimeter is only 2D i think.
The surface area is 6[six faces] x (3x3)[area of one face]
which is 54.
2007-03-31 12:34:56 · answer #4 · answered by Anonymous · 0⤊ 0⤋