The three 200 g masses in the figure (Figure 1) are connected by massless, rigid rods.  

Part A

What is the triangle’s moment of inertia about the axis through the center?  

Express your answer to two significant figures and include the appropriate units.  

Part B

What is the triangle’s kinetic energy if it rotates about the axis at 6.0 rev/s?  

Express your answer to two significant figures and include the appropriate units.