Find the area of the triangle whose base is 15 cm and height is 20 cm.

• A. \[220c{{m}^{2}}\]
• B.  \[180c{{m}^{2}}\]
• C.  \[140c{{m}^{2}}\]
• D.  \[150c{{m}^{2}}\]
• E.  None of these