A piece of mass 36.81 kg is cut from a block of 4.0 xx 10^2 kg. Calculate the mass of the remaining block upto proper significant figures.

A piece of mass 36.81 kg is cut from a block of 4.0 xx 10^2 kg. Calcul

1.	A piece of mass 36.81 kg is cut from a block of 4.0 xx 10^2 kg. Calculate the mass of the remaining block upto proper significant figures.
Answer» Solution :The mass of the block = `4.0 XX 10^2` kg (one decimal place) The mass of the PIECE cut = 36.81 kg (TWO decimal places) Since, the least precise number has only one decimal place, the final result should also have one decimal place. THEREFORE, the mass of the remaining block: `4.0 xx 10^(2) kg -36.81 kg` `=363.19 kg = 3.6 xx 10^(2)` kg