2. The first picture: 3. 14×5? ×2

=3. 14×25×2

=3. 14×50

= 157(cm？ )

The second picture: 4÷2=2 (cm)

3. 14×2? × 12

=3. 14×4× 12

=3. 14×48

= 150.72(cm？ )

Figure 3: 8÷2=4 cm

3. 14×4? ×8

=3. 14× 16×8

=3. 14× 128

=40 1.92(cm？ )

3, 56÷2=28 cm

3. 14×28? ×87

=3. 14×784×87

=246 1.76×87

= 2 14 173. 12(cm？ )

=2 14 173. 12

Answer: It can hold 2 14 173.438+02 ml of water.

4, 3÷2= 1.5 (m)

3. 14× 1.5? ×0.5×2

=3. 14×2.25× 1

=7.065(m？ ) =7.065 (square)

A: The two flower beds need to be filled with 7.065 cubic meters of soil.

5, 80÷ 16=5 (cm)

Its height is 5 cm.

That's it. I am here for your wealth. I've tried. You must keep your promise.