Răspunsuri

2014-08-10T12:37:35+03:00
A)A=l²√3/4=  (5√2)*√3/4= 25*2√3/4=  25√3/2

b)A=(√3/2)² *√3/4=  (3/4 *√3)/4= 3√3/4/4= 3√3/4 *1/4=  3√3/16

c)A=(2√3)² √3/4=  4*3√3/4=  3√3