How many square feet of cardboard does jessica need to make a rectangular prism with length of 16 inches, width of 9 inches, and height of 4 inches?

488

you need to find surface are and the formula is : a=2(wl+hl+hw)

with the numbers plugged in the equation is: 2(9x16+4x16+4x9)

now to multiply:2(144+64+36)

now to apply distributive property: 2x144 + 2x64 + 2x36

                                                         288 + 128 + 72

                                                          416 + 72

                                                            488