HELP

[katie25]

please help!!
an unsharpened pencil is in the shake of a hexagonal prism, in which the face edge is 4 millimeters and the length is 170 millimeters. Find the lateral area of this pencil

 

[tkhunny]

Six triangles. Look at just one.

 

[soroban]

Of course, tkhunny meant to say "six rectangles".

 

[mmm4444bot]

And, Katie meant to say "shape", but what is her question about this exercise? I mean, where is she stuck?

We won't know, until she tells us.

 

[Denis]

Six triangles. Look at just one.

Double duty in the corner!

 

[tkhunny]

Nice. I was trying to get the point measured. Missed "unsharpened". That's a way easier problem.

 

[lookagain]

Nice. I was trying to get the point measured. Missed "unsharpened".
That's a way easier problem.

Had it been this case instead, and which it is not

An (evenly) sharpened pencil would include a cone-shaped end, as opposed to the top of
a six-sided "top" of a pyramid having six congruent isosceles triangles meeting at the point
of the pencil.

Lateral areas (including area formulas) of certain objects are discussed here:

http://www.andrews.edu/~calkins/math/we ... geom10.htm

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Edit:

I must include the point (no pun intended) made from Subhotosh Khan below.

 

[Deleted member 4993]

[
An (evenly) sharpened pencil would include a cone-shaped end,

That may not be true if the pencil was sharpened in the old-fashioned way - with a knife.

Back ... way back when, I sharpened many pencils ending with triangle-pyramid end - (too much time in hand - lazy summer afternoon, no TV ,no Nintendo, hawkeye Mom ..... artistic expression had to come out somewhere....)