jbear201111oxku0v
jbear201111oxku0v
21-11-2017
Mathematics
contestada
What is the answer ?
Respuesta :
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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