Question

Me ajudem na questão 2 por favor

Answer 1

Resposta:

AB:

$c = 2\pi \times r \\ c = 2 \times 3.14 \times 12 \\ c = 75.36$

$\frac{360}{120} = \frac{75.36}{x} \\ 360x = 75.36 \times 120 \\ 360x = 9043.2 \\ x = \frac{9043.2}{360} \\ x = 25.12$

Resposta: 25.12

A'B':

$c = 2\pi \times r \\ c = 2 \times 3.14 \times 6 \\ c = 37.68$

$\frac{360}{180} = \frac{37.68}{x} \\ 360x = 37.68 \times 180 \\ 360x = 6782.4 \\ x = \frac{6782.4}{360} \\ x = 18.84$

Resposta: 18,84