2.45 Pa2.45 \mathrm{~Pa}2.45 Pa
2.45×102 Pa2.45 \times 10^{2} \mathrm{~Pa}2.45×102 Pa
2.45×104 Pa2.45 \times 10^{4} \mathrm{~Pa}2.45×104 Pa
2.45×105 Pa2.45 \times 10^{5} \mathrm{~Pa}2.45×105 Pa