Well first of all we would have to find 1% of the total seats but first we need to understand that 38% arent sold, and there are 17,100 left. So to find 1 % we divide 17,100 and 38 so lets do that math:) 17,100 ÷ 38 = 450 so now we know that 1% = 450 seats lets multiply that by 100 to get how many seats that are in the arena... 450 x 100 = 45,000 so there are 45,000 seats in the arena hope this helps:) and don't forget 2 MARK ME BRIANLIEST! :D