The key difference from Euclidean geometry is that a circle of radius \(r\) has circumference \(2\pi\sinh r 2\pi r\), and volumes grow exponentially rather than polynomially: \[\operatorname{Vol}(B(r)) = \operatorname{Vol}(S^{n-1})\int_0^r \sinh^{n-1}(t)\,dt.\]
Оказавшиеся в Дубае российские звезды рассказали об обстановке в городе14:52
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Can India be a player in the computer chip industry?
不过，经过多年大规模建设，铁路、公路等传统基建的投资高峰期已过，未来用钢需求增长可能放缓。但存量需求依然可观，加上城市群及都市圈互通、地下管网更新等重大项目，仍能为建筑用钢提供一定支撑。