Kunci Jawaban Matematika Kelas 8 Semester 2 Halaman 219 220, Uji Kompetensi Bab 8: Soal Essai Part 1

x⊃2; = 1.300/52

x⊃2; = 25

x = √25 = 5

Maka:

- Panjang = 4x = 4(5) = 20 cm

- Lebar = 2x = 2(5) = 10 cm

- Tinggi = 3x = 3(5) = 15 cm

Baca juga: Kunci Jawaban Matematika Kelas 8 Semester 2 Halaman 216 217, Uji Kompetensi Bab 8: Part 1

b. Panjang kerangka balok

r = 4p + 4l + 4t

r = 4(20) + 4(10) + 4(15)

r = 80 + 40 + 60

r = 180 cm

c. Volume balok

Volume balok = p x l x t

Volume balok = 20 x 10 x 15