The height (h) of the triangle is 10 feet and its base (b) is 4 feet.
The formula for the area of triangle is .
Substitute the values of in the area formula of triangle.
Cancel common terms.
.
The width (w) of the rectangle is 1.6 feet and its length (l) is 25 feet.
The formula for the area of rectangle is .
Substitute the values of in the area formula of rectangle.
.
The width (w) of the rectangle is 3.5 feet and its length (l) is 4 feet.
The formula for the area of rectangle is .
Substitute the values of in the area formula of rectangle.
.
The width (w) of the rectangle is 5 feet and its length (l) is 16 feet.
The formula for the area of rectangle is .
Substitute the values of in the area formula of rectangle.
.
The width (w) of the rectangle is 0.4 feet and its length (l) is 50 feet.
The formula for the area of rectangle is .
Substitute the values of in the area formula of rectangle.
.
The option D is correct answer.
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