Hitunglah A. luas permukaanya B. Volumenya Tolong Pakai Cara Terima Kasih

A. L1 = 2 × phi × r^2 + 2 × phi × r × t

= 2 × 3,14 × 20^2 + 2 × 3,14 × 20 × 60

= 2 × 3,14 × 400 + 2 × 3,14 × 20 × 60

= 2.512 + 7.536

= 10.048 cm^2


L2 = 4 × phi × r^2

= 4 × 3,14 × 20^2

= 4 × 3,14 × 400

= 5.024 cm^2


L. Gabungan = 10.048 + 5.024

= 15.072 cm^2



B. V1 = Phi × r^2 × t

= 3,14 × 20^2 × 60

= 3,14 × 400 × 60

= 75.360 cm^3


V2 = 4/3 × phi × r^3

= 4/3 × 3,14 × 20^3

= 4/3 × 3,14 × 8.000

= 100.480/3

= 33.494 cm^3


V. Gabungan = 75.360 + 33.494

= 108.854 cm^3