Jawabanmu

2014-04-07T21:31:54+07:00
2t×t/2=64cm t^2 = 64cm t= 8cm alas = 2×t =2×8 = 16 cm
2014-04-07T21:34:57+07:00
L = 1/2.a.t
64 = 1/2.2t.t
64 = t²
√64 = t
8 cm = t

sisi alas 2t
maka 2.8
sisi alas 16 cm