Question

Quanto mede o diâmetro de uma circunferência cujo raio mede :

a) 4cm

b) 18m

c) 2,6mm

d) 14,5cm​

Answer 1

a)

C= 2.$\pi$. 4cm

C= 8 . $\pi$ . cm

C= 25 cm

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b)

C= 2. $\pi$. 18m

C= 26 . $\pi$ . m

C= 81 m

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c)

C= 2 . $\pi$ . 2,6m

C= 5,2 . $\pi$ . m

C= 16m

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d)

C= 2. $\pi$ . 14,5cm

C= 29 . $\pi$ . cm

C= 91cm