Question

7G4 - H
Janie is cutting a circle of fabric to sew onto her new shirt. Her shirt is
she wants to leave a 1 inch margin on either end of the shirt. Which ex
how much fabric will she need in terms of Pi?
irt is 10 inches wide, and
expression represents

Answer 1

Answer:

16$\pi$

Step-by-step explanation:

1. Find diameter of circle:

   If her shirt is 10 inches wide and she wants to leave 1in off of each side, that    

   means she wants the diameter of her circle to be 8in.

   10 - 1 - 1 = 8in

2. Solve for Area:

   (Area of circle = $\pi r^{2}$)

   To find area we need to find Radius

   (Radius = diameter/2)

    Radius = 8/2 = 4in

3. Plug radius into equation to get answer:

   $4^{2}$$\pi$ = 16$\pi$