She started by finding the surface area of the triangle and did 16*12 to get 192. Then she multiplied that by 2 and got 384. Next she found the areas of the rectangles by doing 10*20 = 200, 12*10 = 120, and 16*10 = 160.

Finally, she added all the area together and got 672cm squared.
Where did Kendra make her mistake?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. find the lateral area for the prism. l. a. = 0123456789