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For the region $R$ below, write $\iint_R f\,dA$ as an iterated integral in polar coordinates.

Half a washer, with inner radius 1 and outer radius 3, in the right half-plane.

With $a =$ , $b =$ , $c =$ , and $d =$ ,

$\iint_R f\,dA = \int_a^b\!\!\int_c^d\, f\,dA$ , where $dA =$ $d$ $d$

Note: Use $t$ for $\theta$ in your expressions.

You can earn partial credit on this problem.