Final answer:
To find the total amount of fence needed to surround the garden, add up the lengths of all sides.
Step-by-step explanation:
To find the total amount of fence needed to surround the garden, you need to add up the lengths of all sides.
Given that the side lengths are 2.1 meters, 3.5 meters, 1.9 meters, and 2.25 meters, you can simply add them together.
= 2.1 + 3.5 + 1.9 + 2.25
= 9.75 meters
So, you would need 9.75 meters of fence to surround the garden.