R A = 1/2R B

The volume of a barrel is a = 3.14 * (r a) 2 * h a.

Volume b of barrel b

=3. 14*(R B) 2 * H B。

= 3. 14 *(2RA)2 *( 1/2HA)

= 3. 14 * *(4RA)2 *( 1/2HA)

=3. 14**(R A) 2 * (H A) *2

Volume b of bucket b = volume a of bucket a.

The volume b of barrel b is large.