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?

30cm^2
45cm^2
25cm^2
64cm^2

http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0709_26/image0034e612fc6.jpg

Answer 1

Hint: AB is the hypotenuse of a right-angled triangle with legs of length 3cm.

Answer 2

So, AB is equal to 3sqt2?

Answer 3

Yes

Answer 4

Then the area would be 3sqt2*15, which is about 64.
Right?

Answer 5

Exactly. :)

Answer 6

yay! thank you! (:

Answer 7

You're welcome. =)