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40 =4 s
10 = s
Volume limas = 1/3 x luas alas x tinggi
= 1/3 x 100 x12
= 400 cm³
40 cm = 4×s
4×s = 40 cm
s = 40/4
s = 10 cm
L persegi :
= s×s
= 10 cm ×10 cm
=100 cm
v= 1/3× luas alas× t
= 1/3× 100 cm× 12 cm
= 1×100×4
= 400 cm3 (a)