Tolong di bantu kk kk

s = [tex] \frac{1}{2} [/tex] (12 + 8 + 16)
   = 18 cm

t = [tex] \frac{2 \sqrt{s(s-a)(s-b)(s-c)} }{c} [/tex]
 
        2√18(18-8)(18-12)(18-16)       2√144×15         2x12√15
  =  ------------------------------------- = -----------------  =  -------------
                         16                               16                      16
 
  = 1,5√15 cm

luas  = 1/2 x alas x tinggi
         = 1/2 x 16   x  1,5√15
         =  12√15 cm²