tlng yang tau kerjakan

2la + ka.t
la = 1/2 . 16 . 12 = 96
ka = 4.s
s ^2 = (12:2)^2 + (16;2)^2 = 36 + 64 = 100
s = 10
ka = 4 .10 = 40
2.la + ka .t
2. 96 + 40.30
192 + 1200
1392 cm