To find the area, use length times width.
3

· 5

Convert the mixed numbers into improper fractions.

·

=


= 20.34 units²
The answer is 48 as 7/5 is 0.825.
I would say yes, it is easier to subtract numbers when they are above and below each other because that ways you can easily borrow from the places in front of the number and rewrite without problems. It also helps keep the math more organized so that your work does not confuse you.
Hope this helps c:
P = 2h - 250......ur equation