SOLUTION: The crater is a circular and has an area of 7850 square kilometers. What is the diameter of the crater? Use 3.14 for π

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Question 1033965: The crater is a circular and has an area of 7850 square kilometers. What is the diameter of the crater? Use 3.14 for π
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
A+=+3.14r%5E2 ==> 7850++=+3.14r%5E2 ==> 2500+=+r%5E2 ==> r = 50 km ==> Diameter is 2*50 km = 100 km.