Seudónimo Seudónimo
  • 23-03-2017
  • Mathematics
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what is the exact area of a circle with a diameter of 18 feet

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Аноним Аноним
  • 23-03-2017
A = π r^2
A = 9^2 π
A = 81π 

if using π = 3.14 then

A = 3.14 x 81 = 254.47 ft^2

answer: 81π ft^2 or 254.47 ft^2

hope that helps
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