A cube of side length 9 cm is intersected by a plane perpendicular to the base as shown.

Part 1: Describe the shape of the cross section formed by the cube and the intersecting plane.
Part 2: Find the perimeter of the cross section. Show your work.

Question

A cube of side length 9 cm is intersected by a plane perpendicular to the base as shown. 



Part 1: Describe the shape of the cross section formed by the cube and the intersecting plane.
Part 2: Find the perimeter of the cross section. Show your work.

anonymous · Answer

attachment

anonymous · Answer

@amistre64 can you help?

amistre64 · Answer

even tho the picture is not "to scale" the given information states its a cube

so the missing measurements are 5 and 2 in order to determine the edge of the cross section

amistre64 · Answer

since 5+2 = 7, the longest the side could be is 7, so the cross section is 9 by "at most" 7,  so it wont be a square, but will be a rectangle

anonymous · Answer

Ok so that would be the answer?

amistre64 · Answer

that would be a part of the answer i would assume.

the perimeter is determined by finding the side edge

amistre64 · Answer

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anonymous · Answer

is there a formula I should use?

amistre64 · Answer

pythag comes to mind

anonymous · Answer

oh ok so it would be... i got 5.38

amistre64 · Answer

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