Calculating Electromagnetic Energy from Satellite Dish

[ilovephysics2]

Homework Statement

A typical electromagnetic signal from a communications satellite might have an intensity of 0.9 pW/m2 at the surface of the Earth. Your satellite dish collects the energy of the electromagnetic signal from the satellite; then your dish passes that energy to its central receiver, where the signal can be processed by a circuit. The area of a satellite dish can be calculated from pi (3.1416) times the radius squared. If your satellite dish has a radius of 0.36 m, and if it is receiving the signal described above, how much electromagnetic energy is reflected to the central receiver in 2.5 minutes? Express in pj and MeV

Homework Equations

The Attempt at a Solution

I tried solving this but I am not sure what equation to use.

 

[Mentallic]

How about energy=power*time?

Total power input = power of signal * area

sorry that I don't know the actual proper formulas, I'm just using common sense here.