You can buy 5 cans for green beans at the village market for $2.10. you can buy 10 of the same cans of beans at sam's club for $5.90. which place is the better buy?
if the diameter is 10, making radius 5~ i think the circumfrance would be 31.4
pi times diameter. (3.14x10=31.4)
x = 0, y = -2