SOLUTION: What is the ratio of a 5.375 inch circle (diameter) to a 6.125 inch circle (diameter). What is the formula? W.L.Sparks

Algebra ->  Circles -> SOLUTION: What is the ratio of a 5.375 inch circle (diameter) to a 6.125 inch circle (diameter). What is the formula? W.L.Sparks      Log On


   

Question 766045: What is the ratio of a 5.375 inch circle (diameter) to a 6.125 inch circle (diameter). What is the formula? W.L.Sparks
Answer by solver91311(24713) About Me  (Show Source):
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If circle has a radius , then the area of that circle is .

Likewise the area of circle with radius has area .

Then the ratio of the areas of the first circle to the second is .

Recalling that the diameter is twice the radius, substitute your numbers and do the arithmetic.

John

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