Question

Tolong bantu no.26 beserta dg caranya
#r

Answer 1

Vol ½ bola = ½ . 4/3 . phi . r³
= 1/2 . 4/3 . phi . 1³
= 2/3 phi
vol kerucut = 1/3 . phi . r . t
= 1/3 . phi . 1 . 4
= 4/3 phi
vol total = 2/3 phi + 4/3 phi
= 6/3 phi
= 2 phi