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

a. 19.63 ft
b. 15.7 ft
c. 7.85 ft
d. 31.4 ft

15.7

A=pi r

A=pi (2.5)
A=2.5 (3.14)
A=7.85 ft

To find the length of the piece of ribbon needed to go around the circular tablecloth, we can use the formula for the circumference of a circle.

The circumference of a circle is given by the formula: C = 2πr, where C is the circumference and r is the radius of the circle.

In this case, the radius is given as 2.5 feet. So, we can substitute this value into the formula and calculate the circumference:

C = 2π(2.5)
C ≈ 2π(2.5)
C ≈ 5π

Now, we need to find the closest measurement amongst the given options.

a. 19.63 ft: This is larger than 5π, so it's not a valid option.
b. 15.7 ft: This is smaller than 5π, so it's not a valid option.
c. 7.85 ft: This is equal to 5π, so it's a possible answer.
d. 31.4 ft: This is larger than 5π, so it's not a valid option.

Therefore, the closest measurement to the length of the piece of ribbon in feet is c. 7.85 ft.

C = pi * d

C = 3.14 * 5
C = ?