26.4k views
5 votes
Santa is sewing fringe to the edge of a round rug for her living room. If the rug measures 60 inches across, how many inches of fringe does Santa need?

User Rav
by
7.6k points

1 Answer

2 votes

Hello there. To solve this question, we'll have to remember how to calculate the measure of a circumference.

Given a circle with diameter d, as in the following drawing:

The measure of the circumference C can be found by the formula:


C=\pi\cdot d

In this case, knowing that the rug measures 60 inches across, to find how many inches of fringe Santa needs, we simply plug in d = 60


C=\pi\cdot60

Using an approximation for pi:


\pi\approx3.1415

We get that:


C\approx188.5\text{ in}

Santa is sewing fringe to the edge of a round rug for her living room. If the rug-example-1
User Decapo
by
7.3k points