Arectangular picture frame is 12 inches wide and 18 inches high. this includes a 2 inch bidder around the picture itself. how many square inches are in the boader

Okay so, basically its giving you the length and width and is asking for the area. In order to find the area you multiply the length by the width. Since there is a 2 inch boarder, you add 2 to each number. So 12 + 2 is 14 and 18 + 2 is 20, and 14 x 20 is 280! So the area  would be 280 square inches. Unless you mean that 12 and 18 include the 2 inch boarder, so that is distracting information that is there to make sure you understand the concept by seeing if you know to discard the information. So in that case, the answer would be 12 x 18 which means your answer is 216 square inches.

You're doing something i dont know how to do but search up on google slope calculator maybe that will get you there