Question

Dau coroana! Urgent! ​

Answer 1

AB=CB=x

x²+x²=8²

x²+x=8

$2x = \sqrt{8} \\ 2x = 2 \sqrt{2} \\ x = \sqrt{2}$

.

.

$l = \sqrt{2}$

=>

Perimetru=

$\sqrt{2} + \sqrt{2} + \sqrt{2} + \sqrt{2} = 4 \sqrt{2}$

=> Aria=

$\sqrt{2 } {}^{2} = 2cm {}^{2}$