Hello!
The answers are:
Why?
To find the answer we need to find the numbers that could give as result of its product (factors), the given information about the area.
So, if the area is equal to
we need to find the numbers that could give the number 60 as result, it's important to remember that the length should be longer than the width.
Then, being the first term the length and the second the width, we have:
Have a nice day!