Acircle with area 9pie has a sector with a central angle of 60°

Answer is 3/2pie

Area=

So area is 9 pie

Sector=

So you just replace area with 9pie

And then you just simplify

Thus you get= 3/2pie

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.