Respuesta :

The shape is a trapezoid and its area formula is:

A = [tex] \frac{a+b}{2} [/tex]h

a is a base length, b is another base length and h is the height.

A = [tex] \frac{3.1+11.9}{2} [/tex](10.8)
A = 81

So the area of the shape is 81yd²

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