The photograph shows the arm of a mechanical digger. It is controlled by three hydraulic pistons called 'rams', labelled X, Y and Z.
Explain why the arm is raised when compressed air is released into ram X so it extends.

answer: haha (: i’ll go see what it is

step-by-step explanation:

i think it would be 42cm

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )