Swapping rows alters the sign of the determinant:

Multiplying a single row by a scalar scales the determinant by the same amount:

Then

Rectangular prism rectangular prism
Answer:
<h2><u><em>
20%</em></u></h2>
Step-by-step explanation:
Express 4/20 as a percentage.
4/20 = 1/5
100 * 1/5 = 20%