Question

I'm not sure how to do the precise problems!
11ft;122in and can someone explain how to solve these types of problems please

Answer 1

what is the exact problem?

11 feet; 122 inches
does not mean much.

do you want to compare them, and say which is bigger?

if so, you need to use the *same units* (there is a saying, "compare apples to apples")

you can change feet to inches by multiplying, like this:
\[ 11 \ ft \cdot \frac{ 12 \ in}{1 \ ft} = 11\cdot 12 \ in = 132 \ in\]

now you can compare 132 inches to 122 inches