NO LINKS OR YOU WILL BE REPORTED NO GUESSING Amazon wants to know the smallest amount of cardboard they can use to make a box for shipping a new picture book. The book is 21 cm long, 19 cm wide, and 1 cm high. Find the surface area to find the amount of cardboard needed.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.