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(Look at the picture)

A=a+b

2h=3+5

2·7=28

Step-by-step explanation:

Hope this helps

20 square yards

Step-by-step explanation:

I) Use formula for area:

A = ((a + b) / 2) * h

A = ((3 + 7) / 2) * 4

II) Solve:

A = (10 / 2) * 4

A = 5 * 4

A = 20

III) Final answer (with unit):

Our final answer is that the area of the trapezoid is 20 square yards, or 20 yd^2.