tolongin cari luasnya

l1 = (6 + 12) x 8 x 1/2
   = 18 x 8 x 1/2
   = 72
l 2 = 8 x 8
   = 64
 l 3 = 1/2 x 6 x 8
       = 12
l 4 = 1/2 x 22/7 x 14
     = 22
l = 72 + 64 +12 + 22
   = 170