Find perimeter pls help​

18.85

Step-by-step explanation:

So perimeter of a regular circle is 2pi(r) where r is radius right so 2(3.14)(6)= 37.7 now since its a semicircle just divide by 2 so 37.7/2 is 18.85

need more info

step-by-step explanation:

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2