Um retangulo tem de area 100m qual e o perimetro de um quadrado com area iguala do retangulo

Ineed with number 17 i don’t get it at alll

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.

Triangle xyz has vertices x(1,3), y(0,0)