There are with infinitely many possible dimensions for triangles with a given area.
Given the surface area of a rectangular prism, there are infinitely many rectangular prisms possible.
A rectangle can have only 2 dimensions and so finding the area from the given 4 dimensions has many possibilities.
That will depend entirely on the dimensions of the area of which none have been given
You have given 3 dimensions and not the shape. For area you generally need two dimensions, like for a rectangle. The area of this is Length by width.
It is not possible to give a proper answer to the question since the dimensions of the measurements are not given.
There are with infinitely many possible dimensions for triangles with a given area.
That will depend on their dimensions which have not been given.
The area of a rectangle does provide enough information about its dimensions. It is possible fo the rectangle to be long and narrow or squat and short (almost square).
The answer depends entirely on how the dimensions change. It is possible to change the dimensions without changing the perimeter. It is also possible to change the dimensions without changing the area. (And it is possible to change the area without changing the perimeter.)
Given the surface area of a rectangular prism, there are infinitely many rectangular prisms possible.
The area is 30*120 = 3600 square cm. Given only two dimensions it is not possible to calculate a volume.
It cannot be determined by the limited information given. There are too many possible solutions.
The answer, if any, will depend on the shape. Since you have not specified what shape you are asking about it is not possible to give a more meaningful answer.
The answer depends on the shape of the object and its dimensions. With none of that information given it is sort of impossible to give an answer.
Length + width = half the perimeter, but more info eg area, is needed.
190 in is a length, not an area. Even if you were given an area, unless it was in the form of a regular shape you would not be able to determine its dimensions.