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soal nya itu yg di arsir itu bentuk persegi panjang
kalau salah maaf yaa
(d1 x d2) : 2 = (24 x 18) : 2
= 216
Luas persegi panjang
p x l = 24 x 18
= 432
Luas yg diarsir
432 - 216 = 216
12) s = 2,2m
= 22 dm
V = 22 x 22 x 22
= 10648 dm3
= 10648 L
13) V = 108 L
= 108000 cm3
108000 = p . l . t
= 45 . 40 . t
= 1800t
108000 : 1800 = t
60 cm = t
Maaf kalau salah