To convert 20°C to Fahrenheit using the formula \( F = \frac{9}{5}C + 32 \):
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Substitute \( C \) with 20: \[ F = \frac{9}{5} \times 20 + 32 \]
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Calculate \( \frac{9}{5} \times 20 \): \[ \frac{9 \times 20}{5} = \frac{180}{5} = 36 \]
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Add 32: \[ F = 36 + 32 = 68 \]
Therefore, the temperature in degrees Fahrenheit is 68°F.