dua buah bola memounyai jari jari masing masing 7 cm dan 10,5 cm perbabdingan volume kedua bola adalah

MAPEL = MATEMATIKA
KELAS = 9
BAB = PERBANDINGAN

diketahui =
jari jari bola 1 = 7cm, diameter = 14cm
jari jari bola 2 = 10,5 cm, diameter = 21cm

ditanya =
perbandingan 2 volume??

[tex] \frac{v.bola1}{v.bola2} \\ = \frac{ \frac{1}{8 } \times \frac{4}{3} \times \pi \times {d}^{3} }{ \frac{1}{8} \times \frac{4}{3} \times \pi \times {d}^{3} } \\ = \frac{ \frac{1}{8} \times \frac{4}{3} \times \pi \times {14}^{3} }{ \frac{1}{8} \times \frac{4}{3} \times \pi \times {21}^{3} } \\ = \frac{14 \times 14 \times 14}{21 \times 21 \times 21} \\ = \frac{2 \times 2 \times 2}{3 \times 3 \times 3} \\ = \frac{8}{27} [/tex]

perbandingan 2 volume = 8 : 27

semoga membantu