Seudónimo Seudónimo
  • 04-03-2017
  • Mathematics
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A circle has circumference 28.26 cm. What is the area of ​​the circle? Use 3.14 for pi

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baabaagreysheep
baabaagreysheep baabaagreysheep
  • 04-03-2017
First you need to find the radius of the circle because the formula for the area is π × radius². To find the radius, you divide 28.26 by 3.14 to find the diameter, which is 9, and then divide that by 2 to get 4.5. Now you can substitute the radius into the expression and get 3.14 × 4.5² = 63.6 cm². I hope this helps!
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Аноним Аноним
  • 04-03-2017
63.3cm squared. You have to squared the circumference(28.26) then divide it by 4 times pie. Which is 3.14*4
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