The correct answer is **42,700 km ^{2}**.

Use the formula (area) = (power)/(flux): the answer is 3.29x10^{6} MW divided by 77 MW/km^{2}.

This is about the area of the states of Massachusetts, Connecticut, and Rhode Island combined.

**Question 11.**

Now find the collecting area needed to supply total world power consumption. In 2002 this was 1.38x10^{7} MW.

Use an almanac and determine what U.S. state or states would have to be covered with solar collectors.

Click **here** to check your answers and continue...

© 2001-2002, 2005 by Wm. Robert Johnston.

Last modified 11 January 2005.

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