Addie uses the circular saw shown below.

How many inches of wood will the saw cut through in 1 complete revolution?

http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0800_Subtest_03_13/image0024e677e37.jpg

Question

Addie uses the circular saw shown below.

How many inches of wood will the saw cut through in 1 complete revolution?

http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0800_Subtest_03_13/image0024e677e37.jpg

anonymous · Answer

I need someone to explain this... ? :l

jim_thompson5910 · Answer

it sounds like they want the circumference of the blade

jim_thompson5910 · Answer

I can imagine the saw touching the surface and rolling along it like a wheel

jim_thompson5910 · Answer

1 complete revolution = the circumference of the circle

jim_thompson5910 · Answer

to find the circumference, use the formula

C = pi*d

where C is the circumference and d is the diameter

anonymous · Answer

What a great example of how bad these problems can be.  Ever used a saw?

anonymous · Answer

no

jim_thompson5910 · Answer

good point..this saw is probably spinning at hundreds (if not thousands) of rpm...hmm

anonymous · Answer

yeah around 5800 rpm

jim_thompson5910 · Answer

well idk what they want then, but that's my best guess at what they want

anonymous · Answer

No criticism.  I'm sure you are correct.

anonymous · Answer

So 7 would be the diameter?? Then do 3.14*7=21.98 to get C. So is C equal to how many inches the saw cuts through??

jim_thompson5910 · Answer

exactly, you nailed it

jim_thompson5910 · Answer

that's of course if my assumption is correct

but you have the correct approximation of the circumference

anonymous · Answer

Awesome. (: 21.98 is an answer choice. So that's correct. Thank you!

jim_thompson5910 · Answer

you're welcome

anonymous · Answer

For the record I have used a saw. (: I built my own tree house when I was 11.

jim_thompson5910 · Answer

it would have been better if the blade was painted and it asked "how much paint will be transferred to a piece of wood if it completes one revolution?"

anonymous · Answer

Haha How many saw dust chips will land in your hair??

jim_thompson5910 · Answer

lol way too many...

anonymous · Answer

Way to many is correct. (:

jim_thompson5910 · Answer

oh yeah, i'm on a roll with correct answers

jim_thompson5910 · Answer

to strange questions

anonymous · Answer

@tiffybabyy 
Wow.  A power saw?

anonymous · Answer

Yes. (: My parents were very strict with me and taught me how to be very careful. @telliott99

jim_thompson5910 · Answer

that's quite impressive

anonymous · Answer

I agree.

anonymous · Answer

Why thank you(:

jim_thompson5910 · Answer

don't think I was ever allowed one (or anyone i know allowed to use one) at that age lol