By using the carpet calculator. It adds a little more for error.
This is for non patterned carpeting.
FYI. Take the sample of carpeting and bend it in half. You don't want to see the backing. Get something the is denser because it will wear better. Also get the best padding you can afford. It supports the carpeting. If you have pets there is a padding the has a vapor barrier.
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Verified answer
12x12 =158 sq ft
10x14 =154 sq ft
21x20 =462 sq ft
total 774 sq ft
By using the carpet calculator. It adds a little more for error.
This is for non patterned carpeting.
FYI. Take the sample of carpeting and bend it in half. You don't want to see the backing. Get something the is denser because it will wear better. Also get the best padding you can afford. It supports the carpeting. If you have pets there is a padding the has a vapor barrier.
12 X 26 FT
704 sq. yds