Tlg di jwb yaaaa bantuu

V. Kubus = s x s x s

V. Kubus = 20 cm x 20 cm x 20 cm

V. Kubus = 8.000 cm³

jawabannya b. 8000 cm³

L.P. Tabung = 2 x phi x r ( r + t )

= 2 x 22/7 x 14 cm ( 14 cm + 12 cm )

= 2 x 22 x 2 cm x 26 cm

= 2.288 cm²
jawabannya a. 2.288 cm²