tolong bantu jawabannya yaa msh kurang paham sama materinya

→ Lp Balok tanpat tutup :
= pl + 2pt + 2lt
= 32 . 18 + 2 (32 . 10) + 2 (18 . 10)
= 576 + 2 (320) + 2 (180)
= 576 + 640 + 360
= 1576cm²

→ Tinggi Segitiga 1 :
= √12² + 16²
= √144 + 256
= √400
= 20cm

Luas 1 segitiga :
= 2 (a x t / 2)
= 2 (18 x 20 / 2)
= 2 (18 x 10)
= 2 (180)
= 360cm²

→ Tinggi Segitiga 2 :
= √12² + 9²
= √144 + 81
= √225
= 15cm

Luas segitiga 2 :
= 2 (a x t / 2)
= 2 (32 x 15 / 2)
= 2 (16 x 15)
= 2 (240)
= 480cm²

→ Luas Permukaan :
= 1576cm² + 360cm² + 480cm²
= 2416cm²