Question

Encontre as diagonais dos polignos a seguir:

A) B)

Answer 1

Resposta:

b)

$d = \frac{2}{5} \sqrt{2} \\ d = \frac{2 \sqrt{2} }{5}$

a)

${x}^{2} = {(2 \sqrt{5)} }^{2} + {3}^{2} \\ {x}^{2} = 4 \times 5 + 9 \\ {x}^{2} = 20 + 9 \\ {x}^{2} = 29 \\ x = \sqrt{29}$