Question

bangun ruang sisi datar
soal ada di foto
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Answer 1

Penjelasan dengan langkah-langkah:

1.)

a. luas permukaan

Lp = 2 × (pl + pt + lt)

Lp = 2 × (20.5 + 20.10 + 5.10)

Lp = 2 × (100 + 200 + 50)

Lp = 2 × 350

Lp = 700 cm²

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b.) volume

v = p × l × t

v = 20 × 5 × 10

v = 100 × 10

v = 1.000 cm³

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c. panjang kerangka

= 4p + 4l + 4t

= 4.20 + 4.5 + 4.10

= 80 + 20 + 40

= 100 + 40

= 140 cm

13.)

a.) volume

v = s³

v = 15³

v = 3375 cm³

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b.) luas permukaan

Lp = 6s²

Lp = 6.15²

Lp = 6 × 225

Lp = 1350 cm²

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c. panjang kerangka

= 12 × r

= 12 × 15

= 180 cm