On a two-lane highway, a horizontal curve of radius 300 m is provided. The design speed is $80 \mathrm{~km} / \mathrm{h}$.

If the longest wheelbase of vehicle expected on this highway is 7 m , then the extra widening required (in m ) is ________ (round off to two decimal places).

Even though I had planned to go skiing with my friends, I had to __________ at the last moment because of an injury.

Select the most appropriate option to complete the above sentence.

The President, along with the Council of Ministers, _________to visit India next week. Select the most appropriate option to complete the above sentence.

An electricity utility company charges ₹ 7 per kWh (kilo watt-hour). If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?