Question

Questoes matematicas 2 ano

Answer 1

Resposta:

Explicação passo a passo:

Resolvendo:

I.

$2\pi ---360\\x---30\\\\360x=60\pi \\\\x=\frac{60\pi }{360} \\\\x=\frac{\pi }{6}$

30° = π/6

II.

$2\pi ---360\\\pi ---x\\\\2\pi x=360\pi \\\\x=\frac{360\pi }{2\pi } \\\\x=180$

III.

$2\pi ---360\\\frac{5\pi }{3} ---x\\\\2\pi x=\frac{5\pi }{3} \:.\:360\\\\2\pi x=5\pi \:.\:120\\\\x=\frac{5\pi \:.\:120}{2\pi } \\\\x=5\:.\:60\\\\x=300\:graus$

IV.

$2\:.\:360+\frac{1}{4} \:.\:360=\\\\720+90=\\\\810\:graus\\\\\\2\pi ---360\\x---810\\\\360x=2\pi \:.\:810\\\\x=\frac{1620\pi }{360} \\\\x=\frac{9\pi }{2}$

V.

$a^{2} =b^{2} +c^{2} \\5^{2} =4^{2} +c^{2} \\25=16+c^{2} \\c^{2} =25-16\\c^{2} =9\\c=3\:cm$

Espero ter ajudado!

Desculpe qualquer erro.