Jawabanmu

2014-06-13T18:14:10+07:00
K = 4s 
20 = 4s
s = 5 cm

V = La x t
V = 5 x 5 x 7
V = 175 cm³
2014-06-13T21:10:05+07:00
K persegi = 4s
20 = 4s
s = 20
       4
s = 5 cm

V = La . t
    = s² . t
    = 5² . 7
    = 25 . 7
    = 175 cm³