Tolong ya pake cara....

V1. = 1/3 × phi × r^2 × T

= 1/3 × 22/7 × 7^2 × 9

= 1 × 22/7 × 49 × 3

= 1 × 22 × 7 × 3

= 462 cm^3


V2. = phi × r^2 × T

= 22/7 × 7^2 × 12

= 22/7 × 49 × 12

= 22 × 7 × 12

= 1.848 cm^3


V. gabungan = V1 + V2

= 462 + 1.848

= 2.310 cm^3