Answer:
[tex]\boxed{\tt x=2\: units}[/tex]
Step-by-step explanation:
First, we need to set up an equation using the formula for the area of a triangle.
[tex]\boxed{\tt Area=\cfrac{1}{2} \times \: base\times height}[/tex]
Given:
Area: 4
Base: x
Height: 4
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[tex]\tt 4=\cfrac{1}{2} \times\: x\times4[/tex]
[tex]\longmapsto\tt 4=2x[/tex]
Divide both sides by 2:
[tex]\longmapsto\tt \cfrac{4}{2}=\cfrac{2x}{2}[/tex]
[tex]\longmapsto\tt x=\cfrac{4}{2}[/tex]
[tex]\longmapsto\tt x=2[/tex]
Therefore, the missing side is 2 units.
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