What is the surface area of a rectangular prism with a length of 12 cm, a width of 6 cm, and a height of 4 cm?
http://www.math.com/tables/geometry/surfareas.htm
I'll be glad to check your answer.
To find the surface area of a rectangular prism, you need to calculate the area of each face and then add them together.
A rectangular prism has six faces: a top face, a bottom face, two side faces, a front face, and a back face.
To find the area of a rectangle, you multiply its length by its width.
The top face and bottom face of the rectangular prism have the same dimensions, so the area of each of these faces is 12 cm * 6 cm = 72 cm^2.
The side faces also have the same dimensions, so the area of each of these faces is 12 cm * 4 cm = 48 cm^2.
Finally, the front face and back face also have the same dimensions, so the area of each of these faces is 6 cm * 4 cm = 24 cm^2.
To find the total surface area, you add up the areas of all six faces:
72 cm^2 + 72 cm^2 + 48 cm^2 + 48 cm^2 + 24 cm^2 + 24 cm^2 = 288 cm^2.
Therefore, the surface area of the rectangular prism with a length of 12 cm, a width of 6 cm, and a height of 4 cm is 288 cm^2.