The volume would be twice the original since the base area gets doubled.
<span><span>13</span>×(BaseArea)×Height</span>
Now, twice the Base Area would be :
<span><span>13</span>×(2)(BaseArea)×Height</span><span>
So, the entire thing gets doubled on the other side as well. Which means that 20 cubic units becomes 40 cubic units.</span>