macalona448 macalona448
  • 01-05-2020
  • Mathematics
contestada

the radio of circle X is three times the radius of circle Y. the sum of their areas is 40, then what is the radius of circle X


Answers
6
10
12
14
16

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bailzen47
bailzen47 bailzen47
  • 01-05-2020
i think the answer is 10 because 10 x 2 = 20 and 20 + 20 = 40
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