Please help. I'm struggling with this problem.

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest