You like the size of your MP3 player. The width is 4 centimeters. The length is 7 centimeters. The height measures 1 centimeter. What is the surface area of your MP3 player, in square millimeters?
A. 39 square centimeters
B. 78 square centimeters
C. 3,900 square millimeters
D. 7,800 square millimeters

You like the size of your MP3 player The width is 4 centimeters The length is 7 centimeters The height measures 1 centimeter What is the surface area of your MP class=