Question

tolong di jawab dengan menggunakan cara makasih ​

Answer 1

Jawaban:

a. V kerucut = 1/3 × π × r × r × t

= 1/3 × 22/7 × (14:2) × (14:2) × 12

= 1/3 × 22/7 × 7 × 7 × 12

= 616 cm³

V tabung = π × r × r × t

= 22/7 × 7 × 7 × 16

= 2.464 cm³

V gabungan = V kerucut + V tabung

= 616 + 2.464

= 3.080 cm³

1. L permukaan balok = 2 × (pl + lt + pt)

= 2 × ( (10 × 3) + (3 × 4) + (10 × 4)

= 2 × ( 30 + 12 + 40)

= 2 × 82

= 164 cm²

2. L permukaan kubus = 6 × s²

= 6 × 23²

= 6 × 529

= 3.174 cm²

3. L permukaan tabung = 2 × π r (r + t)

= 2 × 22/7 × 14 × (14 + 20)

= 2 × 22 × 7 × 34

= 10.472²

#semoga membantu