How heavy is 52.2 kilo in stones and pounds -?

Answer 1

You're supposed to learn or look up the conversion factors.

1 kilogram (kg, "kilo") = 2.2 pounds (lbs)

1 stone = 14 pounds

Not that tough to learn.

so 52.2 kg = (52.2)*(2.2) lbs = 114.84 lbs -- round to 115 lbs

Divide by 14: 114.84/14 = 8.2028... stone -- round to 8.2 stone

Another approach is to Google-search the strings "52.2 kg to pound" and "52.2 kg to stone"