Jeannie wants to make 5 identical friendship bracelets. She has 2250 centimetres of string to be cut into equal parts. What is 1/5 of 2250 centimetres in metres?
To find 1/5 of 2250 centimetres, you divide 2250 by 5: 2250/5 = <<2250/5=450>>450 centimetres.
To convert centimetres to metres, you divide by 100 as there are 100 centimetres in a metre: 450/100 = <<450/100=4.5>>4.5 metres.
Therefore, 1/5 of 2250 centimetres is equal to 4.5 metres. Answer: \boxed{4.5}.