No. But it's very convenient, and so close to 'pi' that it's often perfectly good enough for the purpose.
In fact, it's amazing how close (22/7) really is ... it's larger than 'pi' by only about 0.04 percent !
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Firstly, it is pi, not phi. Second, 22/7 is a ratio of 2 integers. It is, therefore a rational number. pi is not a rational number, so it cannot be 22/7. It is a near enough approximation, though.
22 over 7
It is an approximation, yes.
yes
22/7 is a very good approximation of pi (it's around 3.14159...). Pi is nowhere near 45, nor is it close to 22/45 .