Plz help me i beg of u?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok