Solution:

(i) Length of the can, l = 5 cm

Width, b = 4 cm

Height, h = 15 cm

Volume of the can = lbh

= 5×4×15

= 300 cm³

(ii) Diameter of the cylinder, d = 7 cm

Radius, r = d/2 = 7/2 = 3.5 cm

Height, h = 10 cm

Volume of the cylinder, V = r²h

= (22/7)×3.5²×10

= 385 cm³

Difference of the volume = 385-300 = 85 cm³

Hence the plastic cylinder has 85 cm³ more volume than the tin can.