What is the length of the terrace?

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Need on this one asap im almost done with this subject

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?