Two rectangles are joined together to form a single large area. The rectangles do not overlap. The first rectangle has side lengths of $6$ meters and $7$ meters. The second rectangle has side lengths of $3$ meters and $4$ meters. https://cdn.kastatic.org/ka-perseus-graphie/3253d48001a5e73fb2577b6ce93040f8d0c7d868.svg What is the combined area?