Three pages at most.
79 pages in this book
6 including the envelope.
Postage is .45 for a letter 1oz. or less and a large envelope weighing 1oz. or less is .90
On average, a one-ounce letter has about 6-8 pages of paper. The number of pages can vary depending on the paper thickness and size, but this is a common estimate.
1.
about 28349.5231
1gram=9 cal of fat. 9x28.35 grams(1oz)=255.15 cal
Depends on the weight of the paper and envelope. One first class stamp is good for up to 1oz. That can be 6+ pages of thin cheap notebook paper, or as few as 3-4 pages of high quality stationary. Every post office will have a scale that you can use to determine correct postage and be sure, but if you can fit those 13 pages in a regular #10 envelope, you're going to need 3 stamps to be sure.
0.0283 kg.
depends on the size and weight Right now stamps are 44 cents for every 10 pages of a normal Business Letter envelope. So if this is 10 pages and LESS you will need one 44 cent stamp. If it is more you will want to put extra stamps on it. Best thing to do take the letter to the post office and mail it if you can they will weigh it and give you an exact accurate weight to mail it. As long as it is in a business envelope, long envelope and not a manila envelope or box. It is that for 10 pages or LESS 44 cent stamp.
20 pennyweight.
That is 28.34 grams