The prism shown below will be sliced by a plane perpendicular to the base along the dotted line AB. Points A and B are mid points of the equal edges.

What will be the approximate area of the shaded cross section?

85 cm2

60 cm2

15 cm2

42 cm2

Question

The prism shown below will be sliced by a plane perpendicular to the base along the dotted line AB.  Points A and B are mid points of the equal edges.
 
 
 
What will be the approximate area of the shaded cross section?

 85 cm2

 60 cm2

 15 cm2

 42 cm2

anonymous · Answer

attachment

anonymous · Answer

|dw:1341096161443:dw|

$$|AB| = 3\sqrt{2}  $$
and height is 10
Multiply them = $$30\sqrt{2} = 42,4264...$$