Jawabanmu

2014-01-26T20:49:06+07:00
Keliling = 104 cm
s + s+ s+ s= 104
4s =  104
s = 26
phytagoras ; x = 26 ^2 - 24 ^2 = 100
akar 100 = 10
luas = 1/2 x 20 x 48 = 480cm (c)
3 5 3