Jawab Nomor 23,,,,pakai cara
Vlimas = 1/3 x luas alas x tinggi
= 1/3 x 100 x 21
=700 cm³
Vkubus = sx s x s
= 10 x 10 x 10
= 1000 cm³
V balok = p x l x t
= 20 x 15 x 10
= 3000 cm³
vtotal = 700 + 1000+ 3000= 4700 cm³