Kunci Jawaban Matematika Kelas 9 Halaman 280, 281, 282, 283, Menghitung Luas dan Volume

Contoh Jawaban:

Tabung A

Lp = 2πr(r + t)
Lp = 2 x 3,14 x 4 (4 + 10)
Lp = 25,12 (14)
Lp = 351,68 cm²
V = πr²t
V = 3,14 x 4² x 10
V = 502,4 cm³

Tabung B

Lp = 2πr(r + t)
Lp = 2 x 22/7 x 7 (7 + 6)
Lp = 44 (13)
Lp = 572 cm²
V = πr²t
V = 22/7 x 7² x 6
V = 924 cm³

Tabung C

Lp = 2πr(r + t)
Lp = 2 x 3,14 x 4 (4 + 12)
Lp = 25,12 (16)
Lp = 401,92 cm²
V = πr²t
V = 3,14 x 4² x 12
V = 602,88 cm³

Tabung D

Lp = 2πr(r + t)
Lp = 2 x 3,14 x 1 (1 + 8)
Lp = 6,28 (9)
Lp = 56,52 m²
V = πr²t
V = 3,14 x 1² x 8
V = 25,12 m³

Tabung E