Question

1. Tentukan luas permukaan dan volume kubus di bawah ini! 5 cm​

Answer 1

Jawaban:

Luas permukaan

1. 90 cm²

2. 164 cm²

volume

1. 125

2. 120

Penjelasan dengan langkah-langkah:

1. L permukaan = 6 × s²

= 6 × 5²

= 6 × 25

= 90 cm²

2. L permukaan = 2 × [ ( p×l ) + (p×t) + (l×t) ]

= 2 × [ (4 × 10) + (4×3) + (10×3) ]

= 2 × (40+12+30)

= 2× 82

= 164 cm²

1. V = s³

= 5³

= 125 cm

2. V = p×l×t

= 4 × 10 × 3

= 120 cm

note:

jadikan jawaban terbaik

Answer 2

1. Luas permukaan

LP = 6 × r × r

LP = 6 × 5 × 5

LP = 30 × 5

LP = 150 cm²

Volume kubus

V = r × r × r

V = 5 × 5 × 5

V = 25 × 5

V = 125 cm³

2. Luas permukaan balok

LP = 2 × ((p × l) + (p × t) + (l × t))

LP = 2 × ((10 × 4) + (10 × 3) + (3 × 4))

LP = 2 × (40 + 30 + 12)

LP = 2 × 82

LP = 164 cm²

Volume balok

V = p × l × t

V = 10 × 4 × 3

V = 40 × 3

V = 120 cm³