YANG JAGO MATEMATIKA AYO JANGAN NGASAL!!!
Tabung A:
V = π × r × r × t
= 3,14 × 4 × 4 × 10
= 50,24 × 10
= 502,4 cm³
Tabung B:
V = π × r × r × t
= 22/7 × 7 × 7 × 6
= 22 × 1 × 7 × 6
= 924 cm³
Tabung C:
V = π × r × r × t
= 3,14 × 1 × 1 × 8
= 25,12 cm³
Tabung D:
V = π × r × r × t
= 3,14 × 2 × 2 × 10
= 12,56 × 10
= 125,6 cm³
nomor a
Luas permukaan tabung = 2 × π × r × (r + t)
lp = 2 × 22/7 × 4 × (4 + 10)
lp = 2 × 22/7 × 4 × 14
lp = 2 × 22/1 × 4 × 2
lp = 44/1 × 4 × 2
lp = 44 × 4 × 2
lp = 176 × 2
lp = 352cm²
volume = π × r × r × t
v = 3,14 × 4 × 4 × 10
v = 12,56 × 4 × 10
v = 50,24 × 10
v = 502,4cm³
nomor b
luas permukaan tabung = 2 × π × r × (r + t)
lp = 2 × 22/7 × 7 × (7 + 6)
= 2 × 22/7 × 7 × 13
= 2 × 22/1 × 1 × 13
= 2 × 22 × 13
= 44 × 13
= 576cm²
volume = π × r × r × t
v = 22/7 × 7 × 7 × 6
= 22/1 × 1 × 7 × 6
= 22 × 42
= 924cm³
nomor c
r = d/2
= 2/2
= 1m
luas permukaan tabung = 2 × π × r × (r + t)
lp = 2 × 3,14 × 1 × (1 + 8)
lp = 6,28 × 1 × 9
lp = 6,28 × 9
lp = 56,52m²
volume tabung = π × r × r × t
v = 3,14 × 1 × 1 × 8
= 3,14 × 1 × 8
= 3,14 × 8
= 25,12cm³
nomor d
r = d/2
= 4/2
= 2
luas permukaan tabung = 2 × π × r × (r + t)
lp = 2 × 3,14 × 2 × (2 + 10)
= 6,28 × 2 × (2 + 10)
= 6,28 × 2 × 12
= 12,56 × 12
= 150,72cm²
volume tabung = π × r × r × t
v = 3,14 × 2 × 2 × 10
= 6,28 × 2 × 10
= 12,56 × 10
= 125,6cm³
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