Help plsss

find the area of the regular polygon. round to the nearest hundredth if necessary

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Bring the fraction a/a-4 to a denominator of 16-a^2