tolong pake jalannya y

a = 1,2 m = 12 dm
ta = 0,9 m = 9 dm
V = La × t
= ½ × a × ta × tp
= ½ × 12 × 9 × 18
= 972 dm³

volumenya
== 1/2. a. ta. tp
= 1/2. 12. 9. 8
= 1/2. 108. 8
= 1/2. 1944
= 1944/2
= 972 dm^3

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