Tolong jwb gunakan cara ‘diketahui’ngasal ? report
Penjelasan dengan langkah-langkah:
26.
Diket : s = 120 cm = 12 dm
Dit : 1/2 volume total kubus= ?
Jawab:
v = s x s x s = 12 x 12 x 12
= 1.728 dm³ = 1728 liter
(1 dm³ = 1 liter)
volume air yg harus diisi
= (1/2) x 1728
= 864 liter
27.
Diket : s = 120 cm = 12 dm (sisi dan rusuk sama hanya beda penyebutan)
Dit: 5/8 volume total kubus = ?
Jawab v = s x s x s = 12 x 12 x 12
= 1728 dm³ = 1728 liter
volume air yg hrs diisi
= (5/8) x 1728
= 1080 liter
28.
Diket : s = 110 cm = 11 dm
Dit : Volume air yg harus dimasukkan= ?
Jwb:
v kubus = s x s x s
= 11 x 11 x 11
= 1331 dm³ = 1331 liter
Volume air yg harus dimasukkan
= (1/2) x 1331