Question

Volume with PI math problem, we are looking at number two. The sentence says, Pam served her apple pie on a 13 inch diameter dish, she wanted to tie a ribbon around the dish to make it a little bit more festive. How long does the ribbon need to be in order to fit around the dish?

Answer 1

81.68 inches

Explanation

Step 1

Let

diameter=13 inches

so, to find the length of the ribbon find the circumference of the pizza

$\text{Circumference}=2\cdot\pi\cdot radius$

Let

radius=13 inches

replace,

$\begin{gathered} \text{Circumference}=2\cdot\pi\cdot radius \\ \text{Circumference}=2\cdot\pi\cdot13\text{ inches} \\ \text{Circumference}=26\pi\text{ inches} \\ \text{Circumference}=81.68\text{ inches} \end{gathered}$

so, the ribbon has to be 81.68 inches

I hope this helps you