Q Can you help me in proving this formula Pavg=2π2mνr2f2 - Physics - Waves

Question

Q Can you help me in proving this formula
P a v g = 2 π 2 mνr 2 f 2

Decoder_2 · Accepted Answer

Dear
student,
we will definitely help you but you have to specify the variables
used in the formula i ,e, what they really represent so that we can
help you more efficiently
Regards

Q. Can you help me in proving this formula P a v g = 2 π 2 mνr 2 f 2

Q. Can you help me in proving this formula
$P_{a v g} = 2 π^{2} {mνr}^{2} f^{2}$