Jawaban:

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Penjelasan dengan langkah-langkah:

1) T. Sisi Tegak = √12² + 5² = √144 + 25 = √169 = 13 cm

V. Limas = ⅓ x L. Alas x T. Limas

= ⅓ x (s²) x T. Limas

= ⅓ x (10²) x 12

= ⅓ x 100 x 12

= 400 cm³

Lp. Limas = L. Alas + L. Sisi Tegak

= (s²) + (4 x (½ x a x t))

= (10²) + (4 x (½ x 10 x 13))

= 100 + (4 x 65)

= 100 + 260

= 360 cm²

2) T. Balok = 10 + 7 = 17 cm

V. Kubus = s³ = 10³ = 1.000 cm³

V. Balok = p x l x t = 14 x 10 x 17 = 2.380 cm³

V. Gabungan = 1.000 cm³ + 2.380 cm³ = 3.380 cm³

Lp. Kubus = 6 x s² = 6 x 10² = 6 x 100 = 600 cm²

Lp. Balok = 2 x (pl + pt + lt)

= 2 x ((14 x 10) + (14 x 17) + (10 x 17))

= 2 x (140 + 238 + 170)

= 2 x 548

= 1.096 cm²

Lp. Gabungan = 600 cm² + 1.096 cm² = 1.696 cm²