The work done in blowing a soap bubble of radius r of the solution of surface tension S will be

The work done in blowing a soap bubble of radius r of the solution of

1.	The work done in blowing a soap bubble of radius r of the solution of surface tension S will be
Answer» `4pir^2S` `8pir^2S` `2pir^2S` `4/3pir^3S` ANSWER :B