Calculate the monthly energy used by a television set whose power rating is 110W and is operating daily for 6.5 hours ?

First, calculate the daily energy usage of the television set:

Daily energy usage = Power rating x Operating hours per day
Daily energy usage = 110W x 6.5 hours
Daily energy usage = 715 Watt-hours

Next, calculate the monthly energy usage by multiplying the daily energy usage by the number of days in a month (assuming 30 days in a month):

Monthly energy usage = Daily energy usage x Number of days in a month
Monthly energy usage = 715 Wh x 30 days
Monthly energy usage = 21,450 Watt-hours

Finally, convert the monthly energy usage from Watt-hours to kilowatt-hours (kWh) by dividing by 1000:

Monthly energy usage = 21,450 Wh / 1000
Monthly energy usage = 21.45 kWh

Therefore, the monthly energy usage of the television set is 21.45 kWh.