Question

Mohon bantuannya yaaa

Answer 1

Verified answer

Diketahui :
- Jari - Jari Bola/Tabung = 10 cm
- Diameter Bola/Tinggi Tabung = 2 × 10 cm = 20 cm

Ditanya : Luas Permukaan Tabung = ....?

Penyelesaian :
- Luas Permukaan Tabung :
L = 2 × π × r × (r + t)
L = 2 × 3,14 × 10 × (10 + 20)
L = 2 × 31,4 × 30
L = 62,8 × 30
L = 1.884 cm²

Jawaban : B. 1.884 cm²

Maaf Kalau Salah

Answer 2

Tabung

Lp = 2 π r ( r + t )
x = 2. 3,14 . 10 ( 10 + 10 )
x = 2 . 3,14 . 10 . 20
x = 1.256 cm2

Bola

Lp = 3 π r ^2
x = 3. 3,14 . 10 . 10
x = 942 cm2