0.4 cups of dried beans is a small portion that weighs 2.67 oz (75.7 g). It is about half the size of a tennis ball and forms a loose pile 4.13 in (10.5 cm) wide and 1.29 in (3.28 cm) tall.

In kitchen measures
6.4 tablespoons
19.2 tsp · 6.4 tbsp · 0.4 cups
about half the size of a tennis ball
Dried beans typically ranges 0.72–0.86 g/mL depending on how it's packed. A firmly packed scoop weighs more.