Assuming the sun to be a spherical body of radius R at a temperature of TK, evaluate the total radiant power, incident on earth, at a distance 'r' from the sun (where r_0 is the radius of the earth and sigma is stefan's constant)

Assuming the sun to be a spherical body of radius R at a temperature o

1.	Assuming the sun to be a spherical body of radius R at a temperature of TK, evaluate the total radiant power, incident on earth, at a distance 'r' from the sun (where r_0 is the radius of the earth and sigma is stefan's constant)
Answer» `(R^(2) sigma T^(4))/( r^(2) )` `( 4pir_(0)^(2) R^(2) sigma T^(4) )/( r^(2) )` `( PI r_(0)^(2) R^(2) sigma T^(4) )/( r^(2) )` `( r_(0)^(2)R^(2) sigma T^(4) )/( 4pir^(2) )` ANSWER :C