jbear201111oxku0v
jbear201111oxku0v jbear201111oxku0v
  • 21-11-2017
  • Mathematics
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What is the answer ?

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liemonder liemonder
  • 22-11-2017
A=r²*π
155=r²*π
155/π=r²
~49.363=r²
~7.026=r
~7

the same can be done for the lower limit
A=135 -> r~6.55

so r=7 is the only fitting radius within the given range.
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