mohon dgn cara yaa trims

MAPEL = MATEMATIKA
KELAS = 9
BAB = BRSL

diketahui =
- V. kerucut A = 40cm³
- jari jari kerucut B = 4r A
- tinggi kerucut B = 2r A

ditanya = V. kerucut B??

[tex] \frac{vol.a}{vol.b} = \frac{ \frac{1}{3} \times \pi \times r \times r \times t}{ \frac{1}{3} \times \pi \times 4r \times 4r \times 2r} \\ \: \: \: \: \: \: \: \: \: \: \: = \frac{r \times r \times t}{4r \times 4r \times 2t} \\ \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{32} [/tex]


Vol. A : Vol B ➡ 1 : 32

Vol. B :
= 32/1 × Vol. A
= 32/1 × 40cm³
= 1280cm³ ➡ D.

semoga membantu