bhoanalmavvp bhoanalmavvp
  • 21-10-2016
  • Mathematics
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The area of a round mat is 64 pie square inches. what is the diameter of the mat?

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k393b
k393b k393b
  • 21-10-2016
area of a circle
area = pi r ^2 
64 = 3.14 x r ^2
divide both sides by 3.14 
20.38 = r^2 
square root of 20.38 
4.51 = r 
diameter is twice the radius 
4.51 + 4.51 = 9.02 
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