Question

LOOK AT THE IMAGE BELOW PLEASE HELP ASAP

Answer 1

Answer:

13. $12.88m$

14. $10ft$

Step-by-step explanation:

To calculate the circumference, use the following formula, where $d$ is the diameter:

$C = \pi d\\C = 3.14159 * 4.1 = 12.88m$

To find the arc length, use the following formula, where $r$ is radius and $\theta$ is the angle in radians:

$s = r\theta$

Before you plug in any values, convert the angle from degrees to radians using the following formula, where x is the angle in degrees:

$\theta = \frac{x}{180}\pi\\\theta = \frac{144}{180}\pi\\\theta \approx 2.5$

Now plug in your values:

$s = 4 \cdot 2.5\\s = 10ft$