The surface of the circular ring is 66 cm² and its width is 3 cm. Calculate the radiuses of the circles that form that ring. pi = 22/7.
Solution (2 cm and 5 cm).

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Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.