6. Thm 11.5 continued Side length of Quad I Side length of Quad II = a b Area of Quad I Area of Quad II = a 2 b 2 I II ka kb Quad I ~ Quad II
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10. Using perimeter and area in real life Ex. 2: Using Areas of Similar Figures Because the ratio of the lengths of the sides of to rectangular pieces is 1:2, the ratio of the areas of the pieces of paper is 1 2 : 2 2 or, 1:4
11. Using perimeter and area in real life Ex. 2: Using Areas of Similar Figures Because the cost of the paper should be a function of its area, the larger piece of paper should cost about 4 times as much, or $1.68.