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30=4*sisi
sisi=7,5cm
luas permukaan kubus=6*s²
=6*(7,5)²
=337,5 cm²
Dit; Lp?
Jwb: s= kel/4
= 30/4 =7,5 cm
Lp= 6. sxs
6. 7,5 x 7,5
337,5 cm2
jadikan jawaban terbaik yaaaaa?!!! ;)