SOLUTION: If A = 1,386 square centimeters and pie = 22/7, find r. A =nr^2 I come up with answer of 21.004 for r. Can your verify that I am correct. If I have calculated incorrec

Algebra ->  Proportions  -> Lessons -> SOLUTION: If A = 1,386 square centimeters and pie = 22/7, find r. A =nr^2 I come up with answer of 21.004 for r. Can your verify that I am correct. If I have calculated incorrec      Log On


   

Question 1177948: If A = 1,386 square centimeters and pie = 22/7, find r. A =nr^2
I come up with answer of 21.004 for r.
Can your verify that I am correct. If I have calculated incorrectly, please show steps to get correct answer.
Thank you
Found 2 solutions by math_helper, MathLover1:
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
You got it, good work!
(its just two letters in "pi")

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
A+=+1386 square centimeters and pie+=+22%2F7, find r.
A+=pi%2Ar%5E2
r%5E2=A%2Fpi
r%5E2=1386%2F%2822%2F7%29
r%5E2=%287%2A1386%29%2F22
r%5E2=441
r=sqrt%28441%29
r=21