Intalling a replacement lcd on a 13 inch macbook is best left to a professional. If you are not familiar with LCD repair you will most likely do more damgae.
A 13 inch LCD TV varies in price depending on the manufacturer. This type of television sells for up to $400 from top manufacturers, but can be as low as $100-$200 when shopping at discount sites such as Amazon.
One can purchase cases for a 13 inch MacBook at the Apple store where they have a variety of styles. One can also purchase it online at Amazon or eBay.
LCD(13, 16) = 208
LCD(7,9,13) = 7*9*13 which is 819
If 13 inch refers to the diameter, then the radius is one-half that amount.
The LCD of 13, 14 and 15 is 2730 The LCD of 1/3, 1/4 and 1/5 is 60
LCD(21, 13, 14, 15) = 2730
It can be from as low as 17 kgs (37.5 lbs) to 30 kgs (66 lbs).
The least common divisor (LCD) of 8 and 13 is 104.
Since 13 is prime and 18=2*3*3, the LCD would be 2*3*3*13, or 234
78