Question

@jim_thompson5910 can you Help me I'm using a scale factor of 1in=ft and I measured my table which was 13ft by 8in and I 'm confused because I don't know how to do he calculation. Pleas help me @jim_thompson5910

Answer 1

some info is missing

Answer 2

you wrote "1in=ft " but there's no number in front of the "ft"

Answer 3

Sorry it was my wall not the table

Answer 4

Oh sorry 1in=1ft

Answer 5

so every inch represents a foot

Answer 6

if you draw a rectangle that is 1 inch long on paper

then in real life, the rectangle (in this case, the wall) will be 1 foot

Answer 7

if you have a drawing that's 8 inches by 10 inches

then the real life figure will be 8 ft by 10 ft

Answer 8

this only works because we have this 1 in = 1 ft correspondence

Answer 9

So the scale factor doesn't work for 13ft by 8in

Answer 10

is the drawing 13 ft by 8 inches?

or is the real life object 13 ft by 8 inches?

Answer 11

seems odd how you mixed ft and inches

Answer 12

Yeah It is that's why I was confused it was the real life object it was my wall bu maybe it was 13ft by 8 ft is it possible

Answer 13

13 ft by 8 ft is much better

Answer 14

13 ft by 8 inches is way too skinny/narrow to be a wall

Answer 15

Thanks so How would I do my calculation if I'm using 13ft by 8ft

Answer 16

well if you're scaling that down to something you can draw on paper, then use the scale 1 in = 1 ft to get a 13 in by 8 in drawing

Answer 17

Object in real life: 13 ft by 8 ft

Drawing on paper: 13 in by 8 in

Answer 18

Your amazing at teaching you should be a teacher you'll be the best to be honest

Answer 19

I'm glad it's clicking

Answer 20

so if 1in = 1 ft and we have 13 ft by 8 ft it'll be 13 in by 8in like you said now that 13 in by 8in could that be my dimension of scaled object.

Answer 21

yes, your drawing will be 13 in by 8 in

Answer 22

it will represent a real life object (the wall) that's 13 ft by 8 ft

Answer 23

you can see that if you said something like 1 in = 1 mile, then you can draw scale models of anything really (no matter how big they are in real life)

Answer 24

True and how would you show a calculation for that?is it even possible

Answer 25

because we have this very nice ratio, we don't need to do any calculations

Answer 26

just replace "in" with "ft" and you're done

Answer 27

you could do

(1 in)/(1 ft) = (13 in)/(x ft)

1/1 = 13/x

1*x = 1*13

x = 13

so 13 in corresponds to 13 ft

but this defeats the whole convenience of the 1 in = 1 ft ratio

Answer 28

so there's really no calculation to do for 13 ft by 8 ft

Answer 29

not really

Answer 30

so this is one instance where no math is involved and you can share this kind of info with non-math people (and not have to worry about doing calculations right or wrong)

Answer 31

oh that's really cool

Answer 32

yeah I agree