Question

find the circumference and the area of a circle with a radius of 4 in. the circumference is (type an integer or decimal rounded to the nearest tenth as needed.)

Explanation:

Step1: Recall the formula for circumference of a circle

The formula for the circumference \( C \) of a circle is \( C = 2\pi r \), where \( r \) is the radius.
Given \( r = 4 \) in, substitute into the formula: \( C = 2\times\pi\times4 \)

Step2: Calculate the circumference

\( C = 8\pi \approx 8\times3.1416 \approx 25.1 \) (rounded to the nearest tenth)

Answer:

25.1