1. The problem statement, all variables and given/known data Evalutate the double integral sin(x^2+y^2)dA between the region 1≥x^2+y^2≥49 3. The attempt at a solution so r^2 = x^2 + y^2 dA = rdrdθ so I can turn this into double integral sin(r^2)rdrdθ where the inner integral integrated with respect to dr goes from 1 to 7? and then what are the parameters for integrating with respect to θ? 0 to 2pi? Does this look correct?