Pick the description of a geometric object that best matches the real world object box for a deck of card

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Can someone me do math because i am having a breakdown rn because i don’t get it

Fast! find the length of cu. the triangles are similar. show your work.