The diameter of circle J is 18 cm. The diameter of Circle K is 31 cm. Which circle what has the greater area and by how much? Use 3.14 for pie. Describe two ways you can compare the areas of two circles. Explain when you might prefer to use each.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.