Can anyone me with the slope-intercept form? ?

sorry it's

The circumference of a circle is 60 pi cm3what is the radius of the circle

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

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