tolong kerjain donk susah

Peluang

Dua mata dadu berjumlah 8 :
n{A} = {2,6}, {3,5}, {4,4}, {5,3}, {6,2} = 5
n{S} = 6 × 6 = 36

[tex]\text{Peluang}= \frac{n\ (A)}{n\ (S)} \\ \\ \text{Peluang}= \frac{5}{36}....\text{Jawaban (B)} [/tex]

Perbandingan Ruas (Dua Segitiga Sebangun)

[tex] \frac{AB}{AE}= \frac{BC}{DE} \\ \\ \frac{4+2}{4}= \frac{9}{DE} \\ \\6(DE)=9\times4 \\ \\ 6(DE)=36 \\ \\ DE=36\div6 \\ \\ DE=6\ cm [/tex]

Volume Bola (r = 10 cm)

[tex]V= \frac{4}{3}\times \pi \times r^3 \\ \\ V=\frac{4}{3}\times (3,14) \times (10)^3\\ \\ V=\frac{4}{3}\times (314\times10^{-2}) \times (10)^2\times10 \\ \\V=\frac{4}{3}\times 314\times10\\ \\V=\frac{4}{3}\times 3.140 \\ \\ V= 4.190,476\ cm^3 [/tex]

***Semoga Terbantu***