What are the strings on a cello and how do they contribute to the sound produced by the instrument?

The strings on a cello are typically made of metal or synthetic materials. They are stretched tightly across the instrument's body and are tuned to specific pitches. When the strings are played with a bow or plucked, they vibrate and produce sound. The thickness, tension, and material of the strings all contribute to the tone and timbre of the sound produced by the cello.