The outside four walls and roof of a barn (shown) are to be painted. a. Find the surface area of the barn, not including the floor.

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Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c

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35=5×77=7×1when we simplify 7 by 7we will get 5 and 1, 5 divided by 1 is 5