The sum of angles on a regular polygon is 1800 how many sides does the polygon have

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Will give a: 122 b: 90 c: 48 d: 180

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle