Easy
so remember
4 aces in a deck
probability =(desired outcomes)/(total possible)
total possible=52
4/52=1st card
then since he picked 1 out the total possible is and assuming he drwe an ace 3/51
so the answer is 4/52 times 3/51=1/221

The surface element is

and the integral is


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To compute the last integral, you can integrate by parts:



For this integral, consider a substitution of




and the result above follows.
Answer:
ITS 15 THANK ME LATER!!!!
Step-by-step explanation: