how to find the increase in stadium seats as rows ascend (arithmetic sequences)

Question

I have created a circular sports stadium that will need to fit between 25000 and 50000 seats. The field in the middle is 160m in diameter. There are 8 stairwells equally separated around the stadium, each 2 metres wide. There are 8 sections. A stadium seat is 50cm and i have found the total circumference of 486.65m for the sections alone

i have also found with the seat measurement how many will fit in the first row of each section that being 121 seats

HOW DO I FIND HOW MANY SEATS WILL FIT IN THE STADIUM WITH THE USE OF ARITHMETIC SEQUENCES

tn=a+(n-1)d

d= differnce in rows

a= seats in first row

n= row number

Answer 1

You cannot. The formula works with numbers that do not have physical properties

Seats have length and width. How many can be fit in successive rows depends on the dimensions and on how much space is between rows.