Question

me ajudem por favor!!!!​

Answer 1

Resposta:

a)

$c = 2 \times \pi \times r$

$c = 2 \times 3.14 \times 10$

$c = 62.8$

b)

$c = 2 \times 3.14 \times 6$

$c = 37.68$

c)

$c = 2 \times 3.14 \times 2$

$c = 12.56$

d)

$c = 2 \times 3.14 \times 2.5$

$c = 15.7$