(i) 0.0125 + 0.8250 + 0.025
= 0.8625 = 0.863
\(\because\) 0.025 has three digits including zero after the decimal point so the result should be reported only upto three digits after the decimal point.
There are three significant figures in the answer.
(ii) \(\frac{0.025\times298.15\times0.1155}{0.5785}\)
= \(\frac{0.860908125}{0.8785}\)
= 1.48817
= 1.49
\(\because\) 298.15 has two digits after the decimal point so the result should be reported only upto two digits after the decimal point. There are three significant figures.