Respuesta :

Lets cut this shape into rectangles and triangles.

The rectangles will be 7x3 and 3x4

So that is 21 sq rt and 12 sq ft.

Now the triangles.

One will be 2*3/2 and the other will be 4*3/2

So that is 3 sq ft and 6 sq ft.

In total the hole is 42 sq ft.