tolong dijawab ya no 29 dan 30 pakai cara

29). LP. balok = (2x(6x15) + (2x(15x25) + (2x(25x6) = (2 x 90) + (2 x375) + (2 x 150) = 180 + 750 + 300 = 1.230 cm2 (A)

30). jari" = 14 ÷ 2 = 7
V. tabung = (22/7 x 7 x 7) x 35 cm
= 154 x 35 = 5.390 cm3 (B)


Semoga membantu :):):):):)

29 Luas Permukaan Balok = ( 2 x p x l) + ( 2 x p x t) + ( 2 x l x t )
    = ( 2 x 25 cm x 6 cm ) + ( 2 x 25 cm x 15 cm) + ( 2 x 6 cm x 15 cm)
    = 300 cm + 750 cm + 180 cm = 1230 cm²

30. Volume tabung = Phi x r x r x t
                               = 22/7 x 7 x 7 x 35 cm = 5.390 cm3