Question

problemele de la 1-5
urgent va rog!!!!​

Answer 1

Răspuns:

1)

$l\sqrt{2}$

2)a.

$4\sqrt{2}$

b.

$18\sqrt{2}$

c.

$7\sqrt{6}$

d. 18

3)a. 12

b.

$5\sqrt{2}$

c.

$3.5\sqrt{6}$

d. 9

4)AB -înalţimea

x-latura

conform t lui pitagora

AB=

$\sqrt{ {x}^{2} - { (\frac{x}{2} })^{2} }$

$\sqrt{ \frac{x}{2} \times x \frac{x}{2} }$

$\sqrt{ \frac{x \times (2x + x)}{2} }$

$\frac{ \sqrt{2 {x}^{2} + {x}^{2} } }{2}$

$\frac{x \sqrt{2} }{2}$

5)din formula de mai sus

$\frac{x \sqrt{2} }{2}$

inlocuiesti lung laturei cu x

a.

$4 \sqrt{2}$

b.

$3 \sqrt{6}$

c.

$7.5 \sqrt{2}$

d.

$\frac{4 \sqrt{6} }{3}$