Question

Find the surface area of the outside of the open box.

Answer 1

Here

Answer 2

@triciaal

Answer 3

one approach
open box is minus the surface area of the "opening"
consider the area of the bottom and the lateral area
the lateral area will be the perimeter of the "opening" * the measurement to the bottom.

Answer 4

What formula do you use

Answer 5

the box has a rectangular base the area of a rectangle is the length * width

Answer 6

the perimeter is the sum of all the measurements around the opening

Answer 7

So 20•12 right than what do you do next

Answer 8

For area of rectangular base i got 240 and perimeter is 40?

Answer 9

@triciaal