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72=4s
s=72/4
=18cm
Lalas=s²
= 18²
=324cm²
V= 1/3 Lalasxt
=1/3 x 324 x 15
=1620
= 18
volum = 1/3 x La x t
= 1/3 x s x s x t
= 1/3 x 18 x 18 x 15
= 6 x 18 x 15
= 1620 cm³
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