Split the figure into rectangles by extending the shorter horizontal or vertical edges.<br><br>&bull; Rectangle A: 12 m &times; 4 m = 48 m&sup2;<br>&bull; Rectangle B: 4 m &times; 4 m = 16 m&sup2;<br>&bull; Total area = 48 + 16 = 64 m&sup2;<br><br>Final Answer: 64 m&sup2;