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