What are the perfect square factors of 3150

First, we must lay out all the factors of 3150 and they are:

1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 50, 63, 70, 75, 90, 105, 126, 150, 175, 210, 225, 315, 350, 450, 525, 630, 1050, 1575, 3150

Among these numbers, the only perfect square are:

9, 25, 225

the answer is $42.96

step-by-step explanation:

i believe it's a.

i'm not sure on this one, most likely correct.