bantu jawab dong nanti kumpul nih
Penjelasan dengan langkah-langkah:
15) Luas diarsir
= 12 x 28/2
= 12 x 14
= 168 cm²
16) Luas = 80 x 50 + 40 x 20/2
= 4.000 + 400
= 4.400 cm²
17) Tabung, bangun ruang lengkung
18) Lp = 2 x 18 x 8 + 2 x (18 + 8) x 15
= 288 + 780
= 1.068 cm²
19) Volume = 35 x 30/3 x 25
= 350 x 25
= 8.750 cm³
20) Luas alas = 6.280/20 = 314 cm²
r = √(314/3,14)
r = √100
r = 10 cm
[answer.2.content]
