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4-47.

Two similar trapezoids in centimeters. The first trapezoid, M, A, E, T, has bottom base, T, E, of 30, and top base, M, A, of 20. A perpendicular line drawn from M to T, E, has a length of 11. The second trapezoid E, K, I, M, has a bottom base M, L, and a top base, E, K. A perpendicular line drawn from E to M, l, has a length of 33.The trapezoids at right are similar.  

 

Refer to the Math Notes box in Lesson 3.1.2.

Use proportional equations to find the missing dimensions.
Refer to the Math Notes box in Lesson 3.1.3.

The formula to find the area of a trapezoid is 

  1. What is the ratio of the heights?

  2. Compare the areas. What is the ratio of the areas ?