Question

Find the radius of a circle with an area of .

pi(16x^2+24x+9)

Answer 1

is my question clear??

Answer 2

For a circle of radius \(r\), the area is
\[A=\pi r^2\]
Given that the area is
\[A=\pi\left(16x^2+24x+9\right)\]
you know that the radius squared must be
\[r^2=16x^2+24x+9\]
You have to find an expression for \(r\), and seeing as both sides are squared, you should be able to find an un-squared version, so to speak.

Answer 3

Hint: the right side is a perfect square trinomial. Try factoring it.

Answer 4

Yes i factored it its (4x+3)(4x+3)

Answer 5

so the radius is 4x+3

Answer 6

thanx alot