Volume bangun di samping adalah.... A. 2.198 cm3 B. 4.186,6 cm3 C. 4.291,3 cm3 D. 6.384,6 cm3
Jawab:
c. 4.291,3 [tex]\sf cm^{3}[/tex]
Penjelasan dengan langkah-langkah:
Volume kerucut:
V = [tex]\sf \frac{1}{3} \times \pi \times r^{2} \times t[/tex]
= [tex]\sf \frac{1}{3} \times 3,14 \times 10^{2} \times 21[/tex]
= [tex]\sf 314 \times 7[/tex]
= [tex]\sf 2.198 \: cm^{3}[/tex]
.
Volume [tex]\sf \frac{1}{2}[/tex] bola:
V = [tex]\frac{1}{2} \times \frac{4}{3} \times \pi \times r^{3}[/tex]
= [tex]\sf \frac{1}{2} \times \frac{4}{3} \times 3,14 \times 10^{3}[/tex]
= [tex]\sf \frac{4 \times 1,57 \times 1000}{3}[/tex]
= [tex]\sf \frac{6280}{3}[/tex]
= [tex]\sf 2.093,3 \: cm^{3}[/tex]
.
Volume total: 2.198 + 2.093,3 = 4.291,3 [tex]\sf cm^{3}[/tex](C)
.
Semoga membantu ^_^
[answer.2.content]
