Giuliana built the side of a step stool, according to the plans shown below. A step stool can be broken into a rectangle and 2 triangles. The rectangle has a base of 18 inches and height of 4 inches. The triangles each have a base of 9 inches and height of 8 inches. If the figure is symmetrical, what is the area of the side of the step stool that she built, in square inches? ___ Inches squared
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Answer:
144 inches squared
Step-by-step explanation:
8 x 9 / 2 x 2 = 72 (triangles)
18 x 4 = 72 (rectangle)
72 + 72 = 144 inches squared
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