Question 1096851
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Area of One Triangle = 0.5*b*h
Area of One Triangle = 0.5*4*8
Area of One Triangle = 2*8
Area of One Triangle = 16 square inches
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Area of one quilt = Area of 12 triangles
Area of one quilt = 12*(area of one triangle)
Area of one quilt = 12*(16)
Area of one quilt = 192 square inches
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Area of 9 quilts = 9*(area of one quilt)
Area of 9 quilts = 9*(192)
Area of 9 quilts = 1728
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Final Answer: Mary will need <font color=red>1728 square inches</font> of material.
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