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OpenStudy (anonymous):
Sandy cut out 2 squares and 7 circles from a piece of cardboard. The length of the sides of each square was x inches and radius of each circle was y inches. The expression below shows how many more square inches of cardboard Sandy used for making the circles than the squares. 7πy2 - 2x2 What does the term 7πy2 in the expression represent? The total area of 7 circles The total area of 22 circles The total area of all the shapes The total area of all the squares
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OpenStudy (hoblos):
the area of a square is side^2 , here side = x, so the area of each square is x2 the area of a circle is π(radius)^2 , here the radius is y so the area of each circle is πy2 we have 7 circles and 2 square so what does 7πy2 represent ?
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