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Johanna is selling cheese at the farmersā€™ market. One wheel of cheese has a diameter of 9 inches.

What is the area of the wheel of cheese?

If the 9-inch wheel of cheese costs $18.60, what is the cost per square inch? If the cost is less than a dollar, put a zero to the left of the decimal point?

Respuesta :

Ashraf82

Answer:

The area of the wheel cheese is 63.62 inchesĀ²

The cost per square inch is $0.29

Step-by-step explanation:

* Lets explain how to solve the problem

- One wheel of cheese has a diameter of 9 inches

āˆµ The wheel is shaped a circle

āˆµ The diameter of the wheel is 9 inches

- The radius of the circle is half its diameter

āˆµ The radius of the wheel = 1/2 its diameter

āˆ“ The radius of the wheel = 1/2 (9) = 4.5 inches

- The area of a circle = Ļ€rĀ²

āˆ“ The area of the wheel cheese = Ļ€(4.5)Ā² = 63.61725124 inchesĀ²

* The area of the wheel cheese is 63.62 inchesĀ²

- The 9-inch wheel of cheese costs $18.60

āˆµ The area of the wheel cheese is 63.62 inchesĀ²

āˆµ It cost is $18.60

- To find the cost per square inch divide the cost of the wheel

Ā  by its area

āˆ“ The cost per square inch = 18.60 Ć· 63.62 = 0.29

āˆ“ The cost per square inch is $0.29

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