vrms output

i've been given this question, i know to get the vrms voltage using the peak voltage but hot would you go if u r jus given resistor values, pls have a look at the attachment and get back to me, much appreciated

 

Hi,

Don't see the problem. You calculate the gain using the values of R1 & 2, and apply it to the signal voltage. You're always using rms values. (Hint: the op amp configuration is a buffer with gain)