Respuesta :

We will find the measurement of side FC as follows:

[tex]21=x\cdot\frac{3}{4}[/tex]

Now, we solve for x:

[tex]\Rightarrow x=\frac{21\cdot4}{3}\Rightarrow x=28[/tex]

From this, we have that the measure of side FC is 28 units.

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