Răspunsuri

2014-06-13T13:28:07+03:00
D=18
d=l√2

l√2=18
l=18/√2  rationalizam

l=18√2/2
l=9√2

A=l²=(9√2)2= 162
4 3 4
2014-06-13T13:29:29+03:00