Answer:
17.5 feet
Explanation:
Width of the swing = 11.3 feet
Width of the slide =

Total width of the swing and slide = Width of the swing + Width of the slide 11.3 feet + 6.2 feet = 17.5 feet
In order to find total of two or more things, we use addition.
The addition is taking two or more numbers and adding them together.
It is one of the four basic operations of arithmetic: subtraction, multiplication and division.
Symbol + is used to denote addition.
Addition can be used to solve joining problems, separation problems, part - part - whole problems and comparison or equivalent problems.