A 5.00 m diameter garden pond is 0.500 m deep. Solar energy is incident on the pond at an average rate of 400 W/m².
What is the total solar energy incident on the pond?
a) 3.14 * 10⁴ J
b) 3.14 * 10⁵ J
c) 3.14 * 10⁶ J
d) 3.14 * 10⁷ J