12 inches = 1 foot so 21 in = 1 foot 9 inches.
1386 sq ft
78.2 yards
7 yards is 21 feet.
21 feet is equal to 7 yards because 1 yard is equivalent to 3 feet.
There are 3 ft. are in one yard 7 x 3 = 21 feet
How many cu ft
17 yards equals 51 feet which makes it lomger
3 feet = 1 yard 63 / 3 = 21 yards
12' * 21 ft = 12*21 sq ft = 252 sq ft.
No.
It equals 219 because there are 3 ft in a yd. :P
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