Question

mim ajudem preciso rapido pfvvvvvv ​

Answer 1

$\large\boxed{\begin{array}{l} \rm \: r = \dfrac{d}{2} \\ \\ \rm \: r = \dfrac{0,50}{2} \\ \\ \rm \: r = 0,25 \:cm \\ \\ \rm \:C = 2 \: . \: \pi \: . \: r \\ \rm \:C = 2 \: . \: 3,14 \: . \: 0,25 \\ \rm \: C = 6,28 \: . \: 0,25 \\ \boxed{ \rm C =1,57 \: cm }\leftarrow \sf{Letra \: D}\end{array}}$