Answer:
Area of trapezoid = 84 ft^2
Step-by-step explanation:
Area of a trapezoid formula is [tex]\frac{base1+base 2}{2} \cdot height[/tex]
Length of base1 is 12ft
Length of base2 is 9ft
The height of the trapezoid is 8ft
Plug in all the values in the formula
Area of a trapezoid= [tex]\frac{base1+base 2}{2} \cdot height[/tex]
=[tex]\frac{12+9}{2} \cdot 8[/tex]
=[tex](12+9) \cdot 4[/tex]
= 84 ft^2
