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If a room is 10 feet by 21 feet then its area = 10 * 21 = 210 square feet. There are 3 feet in a yard. There are therefore 3 * 3 = 9 square feet in a square yard. Thus to convert we now divide by 9.
Therefore this is 210/9 = 23 1/3 square yards.
Alternatively, and if you prefer, you can convert your measurements first. As there are 3 feet to a yard then 10 feet = 10/3 = 3 1/3 yards. 21 feet = 21/3 = 7 yards.
3 1/3 * 7 = 23 1/3 square yards.
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How much will it cost to carpet a 21 ft by 12 ft room if carpeting costs 14.50 per square yard?
1 square yard = 9 square feetCost = (21 x 12) x 14.50 / 9 = 3,654 / 9 = $406
How much will it cost to carpet a 21 ft by 12 ft room if carpeting costs 28.95 per square yard?
810.60 for the carpeting.
What is square footage of 21' x 14' room?
To calculate the square footage of a room, you multiply its length by its width. For a room that is 21 feet long and 14 feet wide, the square footage would be 21 x 14 = 294 square feet.
Square yards of a rectangle 12 feet by 21 feet?
(12-ft x 21-ft) / (9 square feet per square yard) = 28 square yards
What will it cost to carpet a room 21 feet wide and 12 feet long if carpeting cost 14.50 per square yard?
21 ft * 12 ft = 7 yards * 4 yards = 28 sq yards 28 sq yds @ 14.50 per yard = 406.00
