help me solve this please

[tex] \huge\underline{ \underline{ \bf{Answer࿐} }}[/tex]
parallel sides measure :
Area :
height (h) = x
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[tex] \boxed{Area = \frac{1}{2} \times (a + b) \times h}[/tex]
Therefore, height of Trapezoid is 4 ft
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[tex]\mathrm{ \#TeeNForeveR}[/tex]