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please help ! i will put in all my effort :) <3 @MrNood
@icecreamman @TobleroneJesus @KendrickLamar2014
lets start with the first step :)
alright, have you found a box yet?
how do i find that? can you pick one? @Vocaloid
it says to look around your house and find a box go find a box
like what type?
it doesn't matter, do you have a cereal box in the kitchen?
yes okay i got it
do you have a ruler?
i got it
ok, how long is the box in centimeters?
let me see
wait i just lost my ruler.. :(
what do i do?
go find it! you need it!
ill brb! dont go anywhere
i cant find it ! :( what can i use? @Vocaloid
do you have a measuring tape?
the average cereal box is about 2 inches wide, 12 inches tall, and 8 inches long, Width = 2 inches Height = 12 inches Length = 8 inches, ok?
ok we will use that :)
surface area = 2*L*W + 2*W*H + 2*H*L what is the surface area?
wait how do i find the surface area
L = 8 W = 2 H = 12 Surface Area = 2*L*W + 2*W*H + 2*H*L
please do the math
ok no problem :) what step are we on ?
please read the problem... we are on step 3
now find the surface area of the box
i got 272
good, you just finished step 3
ok what was the answer for step 1 and 2 again please:)
step 1 is the dimensions of the box I'll get back to step 2 later
ok and what was the dimensions of the box?
Length = ? Width = ? Height = ? do you remember the three numbers?
oh wait yes i do .. you can continue :)
great, "dimensions" just means, what is the length, what is the width, and what is the height? that's all
ok next step .. number 4
ok, so, when we "scale" the box by a factor of 10, it becomes 10 times longer, 10 times wider, and 10 times taller what is the new length, width, and height after we multiply each by 10?
give me a sec
length: 80 width: 20 height : 120
whats the answer for step 2? @Vocaloid
I already told you, I'm going to get back to step 2 later, please be patient ok, you found the new length, width, and height. what is the surface area? (using length = 80, width = 20, and height = 120)?
no, please use the length, width, and height that you just found. L = length = 120, W = width = 20, H = height = 120 Surface area = 2*W*H + 2*L*W + 2*H*L
oh ok :)
also, please stop tagging me, I'm right here...
ok sorry. lol :)
WAIT, hold on, L = 80, not 120, sorry
perfect, now go to step 5 Volume = L*W*H IMPORTANT: use the original dimensions from step 1!
find the volume of the box
wait so what was the answer for step 4
step 4: what is the surface area of the box after it has been scaled up by 10?? please try to concentrate on what is being asked
ok ... step 5?
I just told you: volume of the box = L*W*H using the dimensions from step 1
find the volume of the box
great, step 5 is done, now on to step 6
"scaling down" means that the length, width, and height are divided by 10. Using these new dimensions, find the volume of the box
wait so now what do i do?
divide the length, width, and height by 10 and find the new volume
like this: l / w / h
No, no, that's not what I meant new length = old length/10 new width = old width/10 new height = old height/10 find the new length, new width, and new height
wait can you write it out and ill solve it
Please stop tagging me, I won't say it again. I already wrote it out for you: the old length is 8 inches the old width is 2 inches the old height is 12 inches the new length = old length/10 new width = old width/10 new height = old height/10
so i have to divide by the new length or old?
please, just follow what I wrote out: new length = old length/10 new width = old width/10 new height = old height/10 find the new length, new width, and new height, using the old length, old width, and old height divide the old length by 10 divide the old width by 10 divide the old height by 10 do you know how to divide by 10?
can you help me with that
what is 20 divided by 10?
right! you know how to divide by 10! so what is the old length divided by 10? old length = 12
so 12 divided by 10?
ahh, sorry, the old length is 8, I keep forgetting the old length divided by 10 is...?
u cant divide it.. it will be 1.25
no, what is 8 divided by 10?
yes! so, let's go back to what we had before: new length = old length divided by 10 new width = old width divided by 10 new height = old height divided by 10 the old length is 8 the old width is 2 the old height is 12 what is the new length? what is the new width? what is the new height?
i dont get it
old length is 8 new length is old length divided by 10 what is the new length?
YES now, old width is 2 new width is old width divided by 10 what is the new width?
great old height is 12 new height is old height divided by 10 what is the new height?
PERFECT, we're almost done new volume = (new length)*(new height)*(new width) what is the new volume?
great, that's the new volume
now let's go back to step 2...
what was the answer
I never told you the answer, I'm going to help you find the answer
I'm going to draw the box, and I want you to imagine that I'm "slicing" the box, like a loaf of bread
try to imagine that I took a knife and cut through the dotted lines, so that the box gets cut into pieces
now, if you look at each slice from the side, each slice is shaped like a rectangle
|dw:1432861383242:dw| (pretend you are looking at the box from the side)
each cross-section is shaped like a rectangle, so that's the answer to part 2 do you see the black rectangle I drew in the lower right corner? That's called the "cross-section"
alright, we've finished all six parts, is there anything you're still confused about?
ok, great, we're done then, may I please have a medal? Normally I wouldn't ask but since I spent an hour on this problem, it would be nice :)
wait what do i put for question 2
what shape did I draw?
yes, rectangle, do you have any more questions?
what do i put for 6.
we just went over this, what is the new volume?
0.192, but i need a complete sentence
"The volume after the box is scaled down by a factor of 1/10 is ____." and put the new volume in the blank
I'm sorry, it's very clear that you just want me to give you the answers, please do not ask for my help again.
no its not that.. i promisee.. i just dont want to get the wrong answer :) i promise im not trying to get the answers from you <3 i appreciate all the effort you put into this :) im sure ill get an A! love u
Please look over everything I've written and make sure you can fill out the rest of the homework yourself. I have already told you everything you need.
To make sure you really understand it, pick 3 new numbers (anything is fine) and make sure you can solve the homework problems without my help. That way, you'll know if you really learned the material or not.