The answer is 24. You subtract 40 - 16.
The formula required is:

where A is the amount after t years of the principal P invested at an annual interest rate r (expressed as a decimal fraction) compounded n times per year.
Plugging in the given values, we get:

The final amount is $22,096.17
Add them all up and if they add up to 180 then your side lengths are good
Answer:
Since I figure you don't need this answer anymore, I'm just using it for free pts
Step-by-step explanation: