Since the formula for the base of the cylinder is

, multiplying that by 10 we get

. Hope this helps!
The mistake that was made is that she should of multiplied the fractions by the exponents first
Answer:
0=2+3x+3/2
0=7/2+3x
-3x=7/2
divide by -3 on both sides
x=-7/6
hope this helps
Step-by-step explanation:
60, I think this is the right answer !