Problem
Convert the following value: \( 4 \mathrm{C}^{\circ} \) ( Celsius) to \( \mathrm{F}^{\circ} \) ( Fahrenheit).
Solution
Step 1 ：\( F = \frac{9}{5} \times C + 32 \)
Step 2 ：\( F = \frac{9}{5} \times 4 + 32 \)
Step 3 ：\( F = \frac{36}{5} + 32 = 39.2 \)
