Answer:
x = 2
Explanation:
The volume of this prism is half the volume of it as a rectangular prism. The volume is listed as 30. The rectangular prism would be 60. Volume is found by multipyling base, height and width.
The base is 10 and the width is 3.
Divide 60 by 10 and by 3.
60/10 = 6
6/3 = 2
This means the height x is 2.