Answer:
Step-by-step explanation:
A three dimensional configuration with its face shaped of rectangle is called a Cuboid. So, the prism is in the shape of a cuboid.
The volume of a cuboid = Length *Breadth*Height
The volume of the cuboid shaped prism is
65.60
First find the markdown
markdown = original price times the percent markdown
= 80* 18%
= 80 * .18
14.4
Take the markdown from the original price to find the retail price
80-14.4 =65.60