东非草原是动物的乐园,更是勇敢者的殿堂。为了生存下去,动物身体的每一寸都充满了战斗力。花豹剪风和猎豹闪电都是草原短跑比赛中的佼佼者,每年的百米记录都会被它们轮流刷新。今年,谁是速度之王呢?奔跑路径三只豹比赛奔跑,路径都是圆弧形的。请问:哪条弧的半径最大? East African grassland is a paradise for animals, it is brave hall. In order to survive, every inch of the animal body is full of combat effectiveness. Leopard cut leopard and cheetah lightning are grass-roots dash race leader, the annual record of 100 meters will be their rotation refresh. This year, who is the king of speed? Running path Three leopards race, the path is arc-shaped. I ask you: Which radius of the largest arc?