Jawabanmu

2014-05-06T08:10:11+07:00
Keliling persegi 1 + keliling persegi panjang + keliling persegi 2
( 4 × s ) + ( 2 × ( p + l )) + ( 4 × s )
( 4 × 4 ) + ( 2 × ( 8 + 4)) + ( 4 × 2 )
16 + 2 × 12 + 8
16 + 24 + 8
48 cm