bantu jawab no.27-30 ya yang bisa. Makasi. GBu!

27. s = √(12/2)²+(16/2)² = √36+64 = √100 = 10 cm
½s = 10/2 = 5cm
tt = √13²-5² = √169-25 = √144 = 12 cm
k = 4 x 10 = 40 cm
lp = 12x16/2 + 40x12/2 = 96 + 240 = 336 cm²

28.
60 = 5 x 12
72 = 6 x 12
30 = 5 x 6
volume = 5x6x12 = 360 cm³

29. volume = 12x16/2 x 21/3 = 96 x 7 = 672 cm³

30. rusuk = √(320x3/15) = √64 = 8 cm