Which instruments are used to measure pressure and temperature?

$A$ picometre is written as

How many significant figures should be present in the answer of the following calculations?
$(i)$ $\frac{0.02856 \times 298.15 \times 0.112}{0.5785}$
$(ii)$ $5 \times 5.364$
$(iii)$ $0.0125 + 0.7864 + 0.0215$

Which of the following has the highest energy value?

If an object weighs $275 \ lb$,what is its weight in $kg$? $(1 \ kg = 2.205 \ lb)$

What is the temperature of $343 \ K$ in $^\circ F$ (in $^\circ F$)?