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In page Aalen:

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The maximum extent of the town's territory amounts to 18 km (11 mi) in a north–south dimension and 25 km (16 mi) in an east–west dimension. The area is 14,662.8 hectares (36,233 acres), which includes 42.2% 6,186.2 ha (15,286 acres) agriculturally used area and 37.7% 5,534.9 ha (13,677 acres) of forest. 11.5% 1,692.3 ha (4,182 acres) are built up or vacant, 6.4% 932.8 ha (2,305 acres) is used by traffic infrastructure. Sporting and recreation grounds and parks comprise 1% 152.7 hectares (377 acres), other areas 1.1% 163.9 ha (405 acres).[citation needed]