Three times the sum of a number and two is greater than zero

What is the value of the expression below? (81^2)^1/8

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

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?