If a large pizza has a radius that is 60% larger that that of a medium pizza, what is the percent increase in area between a medium and a large pizza?
Choose the correct choice from the following answers:
A) 30%
B) 60%
C) 98%
D) 120%
E) 156%
Let the radius of medium pizza be r. Then the radius of large pizza is 1.6r.   The area of the medium pizza is pi*r^2   The area of the large pizza is pi*(1.6*r)^2 = 2.56*pi*r^2, an increase of 156%.   The answer is 156%.
<result>E</result>
If a large pizza has a radius that is 60% larger that that of a medium pizza, what is the percent increase in area between a medium and a large pizza?