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Home > CC3 > Chapter 7 > Lesson 7.2.1 > Problem 7-40


The trapezoids are oriented differently and labeled as follows: Smaller trapezoid labeled, A: larger bottom parallel side, 30 m, right side, 18 m, left side, x.  Larger trapezoid labeled, B, larger bottom parallel side, 50 m, right side, y, left side 15 m.The trapezoids at right are similar shapes. 

  1. What is the scale factor between shape B and shape A?

    What is the ratio between the pair of sides 50 m and 30 m?

  1. Find the lengths of the missing sides.

    Use this ratio with each other pair of sides with one given length to solve for the variable.

    9 m

    If is 9 m, what would be?