A wire 48 cm long when heated increased to 56 cm. How long will a 72 cm wire be when it is heated?

Let’s find how many centimeters the first piece of wire has increased:
56 – 48 = 8 cm.
Let’s calculate how much 1 cm of the wire will lengthen when heated:
8/48 = 1/6 cm.
Find how much the second piece of wire 72 cm long will lengthen:
72 * 1/6 = 12 cm.
Determine the length of the second piece of wire after heating:
72 + 12 = 84 cm.
Answer: The length of the second piece of wire after heating will be 84 centimeters.