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V=680dm³
t=17dm
ditanya L alas ...???
V= Lalas × t
680= Lalas×17
Lalas=680/17
= 40 dm²
smggga membantu :)
V = Luas alas segitiga x tinggi prisma
680 = a x 17
a = 680 dm³ / 17 dm = 40 dm²