bantu ini ya kak makasih bayak
Jawab:
semoga membantu
Penjelasan dengan langkah-langkah:
1. Keliling = 2x24 + 2x15
.................. = 48 + 30 = 78 cm²
2. Luas = {(a + b)/2} x t
....120 = {(12 + 8)/2} x t
....120 = (20/2) x t
....120 = 10 x t
....t = 120/10
...t = 12 cm
3. Luas = (1/2) x a x t
............. = (1/2) x 10 x 15
............. = 75 cm²
4. Luas kamar = 3 x 3 = 9 m²
Luas 1 ubin = 60 x 60 = 3.600 cm² = 0,36 m²
Banyak ubin yang dibutuhkan = 9 : 0,36 = 25 ubin
5. Keliling = 2(p + l)
.................. = 2(25 + 15)
.................. = 2 x 40
................. = 80 cm
[answer.2.content]
