Răspunsuri

2014-10-31T15:02:37+02:00
A) 2(L+l) = 2(8+6) 2 · 14=24cm
b) L ·l = 8  · 6 = 48cm.
c) 64=36-AC => 64-36=28 AC= 4√7
d) 4√7 · 24=   96√7