Question

Question #60923

Answer 1

`A=2(l*w+h*l+H*w)`

Explanation:

`h=height`
`w=width`
`l=`length

Basically the find the area of all sides on the prism and add them up.

Answer 2

`2hw+2hl+2lw=2(hw+hl+lw)`, where `h` is the height, `w` is the width, and `l` is the length

Explanation:

If you are given the height `h`, width `w`, and length `l` of the rectangular prism, finding the surface area is equivalent to finding the areas of the six rectangles.

There are two sides with area `hw`, two sides with area `hl`, and two sides with area `lw`. Thus, the total surface area is `hw+hw+hl+hl+lw+lw=2hw+2hl+2lw=2(hw+hl+lw)`.