Star and Power emit!

A star has radius R=1.90x10^9 m and surface temperature T=15,200K. How much power does it emit in the range 500 nm < lamda < 510 nm?
 
I really really tried my best. So can someone help me now?
 
4*pi()*R^2...But I wish it is pi()*R^2
 

OlderDan

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agentsmith1011 said:
4*pi()*R^2...But I wish it is pi()*R^2
It is what it is. Can you use the information from the link I posted, or your text, and the surface area of the star to find the answer?
 

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