Height (h) of cylinder = 14 cm

Let the diameter of the cylinder be d

Curved surface area of cylinder = 88 cm²

2πrh = 88 cm² (r is the radius of the base of the cylinder)

πdh = 88 cm²

* d * 14 cm = 88 cm²

d = 2cm

Therefore, the diameter of the base of the cylinder is 2 cm