A circular drum has a radius of 12.25 inches. Karen wants to glue a ribbon around the edge of the drum. If Karen has exactly enough ribbon, which measurement is closest to the length of the piece of ribbon in inches? Explain why

1 answer

To find the length of the ribbon needed to go around the edge of the circular drum, we can use the formula for the circumference of a circle. The formula is:

Circumference = 2 * π * Radius

Given that the radius of the drum is 12.25 inches, we can plug this value into the formula:

Circumference = 2 * π * 12.25

Using the approximation value of π as 3.14, we can calculate the circumference:

Circumference = 2 * 3.14 * 12.25

Circumference ≈ 77.05 inches

Therefore, the measurement closest to the length of the ribbon needed is approximately 77.05 inches.