Question

Mohon bantuan nomor 19 (bingung caranya).

Answer 1

R tabung = r bola = r

t tabung = 5 × d bola = 5 × 2r = 10r

V kosong
= V tabung - 5 V bola
= π × r² × t tabung - 5 × 4/3 × π × r³
= π × r² × 10r - 20/3πr³
= 10πr³ - 20/3πr³
= 30/3πr³ - 20/3πr³
= 10/3πr³ cm³

Jawaban: A