Question

Pam served her apple pit on a 13 inch diameter dish. She wanted to tie a ribbon around the dish to make it a little more festive. How long does the ribbon need to be in order to fit around the dish? Question 1 options: 169 in. 13 in. 40.82 in. 132.67 in.

Answer 1

40.84 inches

Explanation:

The dish is a circle. The ribbon "around" the dish would be basically the "circumference" of the circle. The formula is:

`C=2\pi r`

Where

C is the circumference (what we want)

r is the radius (half of the diameter)

Diameter is given as 13 inch, so

Radius = 13/2 = 6.5 inches

Substituting and calculating, we have:

`C=2\pi r\\C=2 \pi (6.5)\\C = 13 \pi\\C=40.84`

The answer is 40.84 inches