Question

Alguém pode me ajudar por favor?

Answer 1

Explicação passo-a-passo:

a)

$\sf x^2=6^2+8^2$

$\sf x^2=36+64$

$\sf x^2=100$

$\sf x=\sqrt{100}$

$\sf \red{x=10~cm}$

b)

$\sf x^2+16^2=20^2$

$\sf x^2+256=400$

$\sf x^2=400-256$

$\sf x^2=144$

$\sf x=\sqrt{144}$

$\sf \red{x=12~cm}$

c)

$\sf x^2=5^2+12^2$

$\sf x^2=25+144$

$\sf x^2=169$

$\sf x=\sqrt{169}$

$\sf \red{x=13~cm}$

d)

$\sf x^2+3^2=5^2$

$\sf x^2+9=25$

$\sf x^2=25-9$

$\sf x^2=16$

$\sf x=\sqrt{16}$

$\sf \red{x=4~cm}$