Tolong jawab kan nomor 16 sampai 20.pakai cara
Jawab:
16. L selimut = rs
= 3,14.5.13
= 204,1 (B)
17. V kerucut = 1/3. L alas . t
= 1/3. 3.14. (5)². 15
= 3,14 . 125
= 392,5 (A)
18. L sisi bola = 4r²
= 4. 3,14. (15)²
= 4. 3,14. 225
= 2826 cm² (C)
19. V bola = 4/3. . r³
= 4/3. 3,14. (6)³
= 4/3. 3,14. 216
= 4. 3,14 . 72
= 904,32 cm³ (B)
20. L 1/2 bola kosong = 2r²
= 2. 3,14. (35)²
= 6,28 . 1225
= 7693 m²
= 7693 m² x 10.000 = 7.693.000 ≈ 7.700.000 (D)
No 20 koreksi lagi