In large bowl, beat yogurt, 1 1/2 cups of the whipped topping, and the pudding with whisk until well blended. Cut cake in half. Tear one of the halves into bite-size pieces. Place pieces in bottom of 13 x 9-inch pan. Sprinkle 1 cup of the chopped strawberries evenly over cake. Pour and spread half the yogurt filling on top. Tear other cake half into bite-size pieces. Repeat layers with remaining cake pieces, chopped strawberries and yogurt filling. Refrigerate 2 hours.