# The trapezoid below was created by joining two similar triangles together in which ΔBAD~ΔCDB, BA = 6 cm, BD = 12 cm, and AD = 9 cm. Find the perimeter of the trapezoid.

The trapezoid below was created by joining two similar triangles together in which ΔBAD~ΔCDB, BA = 6 cm, BD = 12 cm, and AD = 9 cm. Find the perimeter of the trapezoid.