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Un cerc are lungimea egala cu 390 mm. Cat e diametrul?

Răspuns :


[tex]l = \pi \times d \\ d = \frac{l}{\pi} = \frac{390mm}{\pi} = 124.141mm[/tex]

L=π×D

390=D×π

D=390/π mm

D=390/3,14=124,203 mm