Solve the quadratic by factoring and using a diamond and generic rectangle

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

$452.90 because you needed to round to the nearest cent

the answer is  

c.

90.0π cm^2

hope you got it.