Calculate the mass of a boy if he has 441 N of weight

Okay, thank you for your question. i'll answer it. however, I suggest that it is best if, when you ask, ask politely, do not add the word "Jawab dengan benar" because many people here want to help others with the right answers.

first we know weight = mass × gravity

weight = N

mass    = kg

gravity  = 9.81 m²/s           #youcan change it to 10 m²/s, base on your assumptions

then,  mass =

then we get m =