Answer:
9 in
Explanation:
The sum of the five sides = 27 in
We know that 2 sides are 5 in and 2 sides are 4 in
Let x be the length of the fifth (unknown) side
Therefore, 5 + 5 + 4 + 4 + x = 27
Combine like terms: 18 + x = 27
Subtract 18 from both sides: x = 9
Therefore, the fifth (unknown) side is 9 in long