| Text | Length |
| 3,280.84 ft. | 12 |
| 3,300,000 square-mile desert | 28 |
| 3,300-year-old king | 19 |
| 3,500-year-old writing deciphered in 1953 | 41 |
| 3,600 secondes | 14 |
| 3,600 secondi | 13 |
| 3,600 seconds | 13 |
| 3,600 ticks | 11 |
| 3,600, in old times | 19 |
| 3,600ths of hrs. | 16 |
| 3-2, e.g. | 9 |
| 3-2-1 follower | 14 |
| 3-23-97 | 7 |
| 3-3, say | 8 |
| 3-D | 3 |
| 3-D area in the Atlantic Ocean? | 31 |
| 3-D art pioneer | 15 |
| 3-D art pioneer Arp | 19 |
| 3-D art project | 15 |
| 3-D camera maker | 16 |
| 3-D diagnostic machine | 22 |
| 3-D display | 11 |
| 3-D exam | 8 |
| 3-D exhibit | 11 |
| 3-D fig. | 8 |
| 3-D figure | 10 |
| 3-D figures | 11 |
| 3-D graph line | 14 |
| 3-D graph lines | 15 |
| 3-D graph part | 14 |
| 3-D graphics in movie special effects, for short | 48 |
| 3-D hosp. procedure | 19 |
| 3-D image | 9 |
| 3-D image-making process | 24 |
| 3-D images | 10 |
| 3-D James Cameron film | 22 |
| 3-D location of the Tomb of the Unknown Soldier? | 48 |
| 3-D med. exam | 13 |
| 3-D med. scan | 13 |
| 3-D medical pictures | 20 |
| 3-D medical test | 16 |
| 3-D photographic image | 22 |
| 3-D pic | 7 |
| 3-D picture | 11 |
| 3-D picture producer | 20 |
| 3-D pictures | 12 |
| 3-D realm for Emperor penguins? | 31 |
| 3-D reference provider | 22 |
| 3-D replica | 11 |
| 3-D representations | 19 |
| 3-D scan | 8 |
| 3-D scanners | 12 |
| 3-D scans | 9 |
| 3-D scene | 9 |
| 3-D shape | 9 |
| 3-D stat | 8 |
| 3-D test | 8 |
| 3-D tests | 9 |
| 3-D trick-picture fad | 21 |
| 3-D trick-picture fad of the '90s | 37 |
| 3-D, as some books | 18 |
| 3-D, in combinations | 20 |
| 3-in-One product | 16 |
| 3-IN-ONE, e.g. | 14 |
| 3-line poem | 11 |
| 3-million-member sporting grp. | 30 |
| 3-note chord | 12 |
| 3-piece band | 12 |
| 3-pointer's trajectory | 26 |
| 3-pointers: abbr. | 17 |
| 3-pt. gridiron plays | 20 |
| 3-R centers | 11 |
| 3-R's org. | 14 |
| 3-time AL batting champ Tony | 28 |
| 3-time Masters champion | 23 |
| 3-time Wimbledon champ | 22 |
| 3-time WSOP champ Ungar | 23 |
| 3-year-old TV character voiced by 45-year-old Kevin Clash | 57 |
| 3.0 and 4.0: Abbr. | 18 |
| 3.0 or 4.0 | 10 |
| 3.0, e.g. | 9 |
| 3.0, e.g.: Abbr. | 16 |
| 3.14 | 4 |
| 3.14 or 4.0 | 11 |
| 3.14 or 4.00 | 12 |
| 3.14, e.g. | 10 |
| 3.14159 | 7 |
| 3.14159..., for pi | 18 |
| 3.1416 | 6 |
| 3.2 million-member org. with a pi in its logo | 45 |
| 3.2 million-member U.S. union | 29 |
| 3.2 million-member union | 24 |
| 3.26 light years | 16 |
| 3.26 light-years | 16 |
| 3.262 light-years | 17 |
| 3.28 feet | 9 |
| 3.3 in a transcript, maybe | 26 |
| 3.5 mo. stretch | 15 |
| 3.5, e.g., for a student | 24 |
| 3.5, e.g.: Abbr. | 16 |
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