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bob wants to know how much carpet he should use his room is 4 feet by 2 feet how many SQUARE feet of carpet does bob need. 4 X 2 = 8 ft2
room is 4 x 5 = 20 square yards in area carpet cost = 12 per sq yd cost = carpet cost x area = 20 x 12 = 240
A yard is 3 feet so your room is 3 by 4 yards which is 12 sq yards. However, most carpet comes in widths of 13 feet so you may have to pay for 9 feet by 13 feet - as your supplier when getting a quote.
As there are 3 feet in a yard, the room measures 4 yards by 6 yards, so, 6 x 4 = the size of the carpet.
32 square feet of carpet. Elementary my dear. Elementary