Question

A circular tablecloth has a radius of 2.5 feet. Lyle is sewing a piece of ribbon around the edge of the tablecloth. If Kale has exactly enough ribbon, which measurement is closest to the length of the piece of ribbon in feet?

Answer 1

`15.7\ ft`

Explanation:

we know that

The circumference of a circle (the length of the piece of ribbon) is equal to

`C=2\pi r`

we have

`r=2.5\ ft`

substitute the value

`C=2\pi (2.5)=5 \pi\ ft`

assume

`\pi=3.14`

`5 \pi=5*3.14=15.7\ ft`