I need step by step Instructions.
What is the area of this figure?

Drag and drop the appropriate number into the box.

Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
A = ft²

A shape made up of a rectangle with a length of 18 feet, another rectangle attached to the first rectangle with a length of 5 feet and a height of 5 feet, another rectangle attached to the second rectangle with a length of 1 foot and a height of 4 feet. The longest straight edge of the shape is labeled with a height of 15 feet.