Question

Este urgent !dau 20 de puncte

Answer 1

Răspuns:

a)  A= lxl= 24x24= 576     AB= BC=AC= CD=24

b) CF=$\frac{25BC}{100} = \frac{BC}{4}$=24:4= 6 cm     CF=6 cm

CF= BE= 6 cm

EC= BC- BE= 24-6= 18 cm

DE= $\sqrt{CE^{2} +CD^{2} }$= $\sqrt{324 +576 }$= $\sqrt{900}$= 30 cm

c) DF= CD- CF= 24-6= 18 cm