tolong dijawab ya kak no. 4 , 8 dan 10

4) C

8) V1 = π × r² × t
= 22/7 × 7 × 7 × 20
= 3.080 cm³
V2 = ⅓ × π × r² × t
= ⅓ × 22/7 × 7 × 7 × 24
= 1.232
Vttl = 3.080 + 1.232 = 4.312 cm³ ( C )

Jawabannya:
4. C. Garis Pelukis
8. V1= 22/7. 7. 20
= 22. 20
= 3080 cm^3
V2= 1/3. 22/7. 7. 7. 24
= 1/3. 22. 7. 24
= 1/3. 154. 24
= 1/3. 3696
= 3696/3
= 1232 cm^3
V1+V2= 3080 cm^3 +
1232 cm^3
= C. 4312 cm^3

SEMOGA MEMBANTU