Final answer:
To calculate the total cost of using a 5600-w electric clothes dryer for 30 min, multiply the power rating by the duration of usage.
Step-by-step explanation:
The total cost of using a 5600-watt electric clothes dryer for 30 minutes can be calculated by multiplying the power rating of the dryer (5600 watts) by the duration of usage (30 minutes) and then converting it to kilowatt-hours (kWh).
First, we need to convert the time from minutes to hours. Since there are 60 minutes in an hour, 30 minutes is equal to 30/60 = 0.5 hours.
Next, multiply the power rating of the dryer by the duration of usage: 5600 watts x 0.5 hours = 2800 watt-hours (Wh).
Finally, convert watt-hours to kilowatt-hours by dividing by 1000: 2800 Wh / 1000 = 2.8 kWh.
Therefore, the total cost of using a 5600-watt electric clothes dryer for 30 minutes would depend on the cost of electricity per kilowatt-hour in your area.