Question

PLEASE HELP I DONT KNOW

Answer 1

Answer:

30.85

Step-by-step explanation:

circumference of a circle = $2\pi r$

In this case, it's half of that because it's a half circle,

With a diameter of 12, the radius is 6

So, $2\pi 6$ = 37.699 then we diver by 2, so we account for the half circle versus a whole. 37.699/2 = 18.8496.

Then add the 12 that makes bottom line. So 18.496 + 12 = 30.8496