Jawabanmu

2014-06-11T21:25:47+07:00
T = akar 28
luas sisi = 1/2 Ka.t + La = 1/2 . 48 akar 28 + 144 = 144 + 48 akar 7
2014-06-11T21:40:48+07:00
L =4*Lsegitiga+Lpersegi
tsegitiga=V10^2-6^2=V100-36=V64=8cm
L=(4*1/2*12*8)+(12*12)= 192+144=336cm2