A metal machine part is 21 millimeters long, 21 millimeters wide, and 4 millimeters thick. A square that is 6 millimeters on each side is punched from the middle of the metal solid. What is the surface area of the resulting figure?

56

step-by-step explanation:

98 points djdjsi zisksis sjsjsi sisksj sksjdj sksks sjsisj

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