Given:
The perimeter of a rhombus of side d cm is

To find:
The perimeter of a rhombus of side 3.2 cm.
Find the length of a side of a rhombus of perimeter 14 cm.
Solution:
Side of a rhombus is 3.2 cm. So, its perimeter is


Therefore, the perimeter of a rhombus of side 3.2 cm is 12.8 cm.
The perimeter of another rhombus is 14 cm, and we need find its side.


Divide both sides by 4.


Therefore, the length of a side of a rhombus of perimeter 14 cm is 3.5 cm.
Simplest form if I had to explain it would be the lowest number you can get to when using fractions. example, 5/10 in simplest form would be 1/2 because 5 divided but 5 is 1 and 10 divided by 5 is 2 so the answer is 1/2
$18 is the rounded dollar to $18.48