3 years ago

Qual o comprimento do arco 65°vem circunferência de raio 7 cm

1 answer:

8 0

A fórmula que te dá o comprimento da circunferência é:

2*pi*r 

onde r é o raio. 

Assim, uma circunferência de raio 7cm tem: 

2*pi*7 

ou 

2*3.14*7 = 
43.96 cm

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