Jawabanmu

2014-06-06T10:20:51+07:00
Ltrapesium = 1/2 . (a+b) t
=1/2 (4+6) 3
=1//2.10.3=15

Lpersegipanjang = p.l
=6.4 =24

NB: tinggi segitiga = 11-3-4 = 4
Lsegitiga= 1/2.a.t
=1/2.6.4 = 12

Luas seluruh = 15+24+12 = 51