Answer:
Height and Base is 5 units, for 3:1 make the base and height 15 units, and for 50% make the base and height 2.5 units
Explanation:
Count how many boxes the side length takes on both sides.
3:1 means your new shape is going to be three times as big, so multiply the height and base by 3.
50% of your original is half of 5, giving you 2.5 units for your base and height length.