Answer: A=56/5 ft^2
Explanation:
A=Area of triangle. b=base. h=height
A=1/2 * b * h
A=1/2 * (5+3/5) * 4
A=1/2 * (25/5 + 3/5) * 4
A=1/2 * 28/5 * 4
A=28/10 * 4
A=28*4/10
A=112/10
A=56/5 ft^2
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