Question

Matematika kelas 9
aku minta tolong ya, yang mengerti bantu jawab Nomor 36 saja^^ hanya itu saja kok :)

Answer 1

R kerucut = r bola = 1/2(30) = 15
t kerucut = √s²-r² = √(39²-15²) = 36

Volume benda = volume 1/2 bola + volume kerucut
V = 2/3 π r³ + 1/3 π r² t
V = 1/3 πr² (2r + t)
V  = 1/3 (3,14)(15²) (30+36)
V= 1/3 (706,5)(66)
V = 22(706,5)= 15.543