Answer
Area of Hurricane Irene: 196,300 mi$^{2}$
Area of Hurricane Katrina: 34,600 mi$^{2}$
Work Step by Step
Area of a Circle: $A$ = $\pi$$d$$^{2}$/4
Therefore:
$A$$_{Irene}$ = (3.14)(500 mi)$^{2}$ / 4
$A$$_{Irene}$ = 196,300 mi$^{2}$
$A$$_{Katrina}$ = (3.14)(210 mi)$^{2}$ / 4
$A$$_{Katrina}$ = 34,600 mi$^{2}$
