L = 2 π r (t + r)
L = 2. 22/7. 4 cm . 14 cm
L = 44.8
L = 352 cm²
V = π r².t
V = π. 4cm . 4cm. 4 cm. 10 cm
V = 160 π cm³
b. Cara penyelesaian :
Diketahui :
- r = 7 cm
- t = 6 cm
L = 2πr (t + r)
L = 44 cm. 13 cm
L = 572 cm²
V = πr²t
V = 22/7.7cm.7cm.6 cm
V = 22 cm. 42 cm
V = 924 cm³
c. Cara penyelesaian :
Diketahui :
- r = 4 cm
- t = 12 cm
L = 2πr (t+r)
L = 2π.4 cm (12 cm + 4 cm)
L = 8 cm.π.16 cm
L = 128 π cm²
V = πr²t
V = π.4 cm. 4 cm. 12 cm
V = 192 cm³