Find the area of the shaded portion. All corners are right-angled.

• A. \[137.8\,\,{{m}^{2}}\]         
• B. \[136.5\,\,{{m}^{2}}\]       
• C. \[135.67\,\,{{m}^{2}}\]                   
• D. \[148.4\,\,{{m}^{2}}\]