A square barn measures 42 feet on each side. A goat is tethered outside by a rope that is attached to one corner of the barn, as shown in the bird's eye sketch. a. suppose the length of the rope is 28 feet. How many square feet of land is the goat able to gaze

b. suppose the length of the rope is made twice as long as in part a. How many square feet of land is the goat now able go gaze

(answer both questions, not just one )
Here's an image that would help

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

Luke wants to reduce the area of his rectangular garden by 1/4 the expression 14/w can be used to represent this change. what is another way to write this expression?