volume gabungan bangun ruang berikut adalah...

Mapel : Math
Bab : Bangun Ruang

Diketahui :
Tinggi kerucut
= 35 cm - 20 cm
= 15 cm

Penyelesaian :
Volume kerucut
[tex] = \frac{1}{3} \times\pi \times {r}^{2} \times t \\ = \frac{1}{3} \times \frac{22}{7} \times 7 \times 7 \times 15 \\ = 770 \: \: {cm}^{3} [/tex]

Volume Tabung
[tex] =\pi \times {r}^{2} \times t \\ = \frac{22}{7} \times 7 \times 7 \times 20 \\ = 3080 \: \: {cm}^{3} [/tex]

Volume gabungan
[tex] = 770 \: \: {cm}^{3} + 3080 \: \: {cm}^{ 3} \\ = 3850 \: \: {cm}^{3} [/tex]
Opsi => C ✔

Good Luck :)
Happy Learn !

Mapel = Matematika
Bab = Bangun Datar

Diketahui :
Tinggi kerucut = 35cm - 20cm = 15cm
jari-jari = 14 ÷ 2 = 7

Penyelesaian :
V. tabung = (22/7 x 7cm x 7cm) x 20cm
= 154 cm x 20cm = 3.080 cm3
V. kerucut=1/3x(22/7 x 7cm x 7cm) x 15cm = 1/3 x (154cm x 15cm)
= 1/3 x 2310 cm = 770 cm3

Volume semuanya =
3.080 cm3 + 770 cm3 = 3.850 cm3 (C)

Semoga membantu :)