This is a question from mathswatch can someone pls answer it

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question

If cos(θ)=2853 with θin q iv, what is sin(θ)?