Answer:
20 1/4
Explanation:
We can turn the fractions improper to solve
4 1/2= 9/2, 9/2 is the improper fraction so now we multiply
9/2 x 9/2=81/4, 81/4 is improper and isn't one of the choices so we can change it into a mixed fraction.
81/4 is equal to 20 1/4