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um pista ABC tem o formato de duas semicircunferências opostas, de raios iguais a 100 m cada uma. Uma pessoa caminha de A para C, seguindo as circunferências. Determine:
A)o espaço percorrido;
B) a distância percorrida;
C)quais seriam as posições de B e C, considerando a origem (marco zero) da trajetória em A.
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