#1
Maths... never been my strong point. I've always preferred English.

Anyway, I am trying to scale a drawing I have. Basically, a 4m road is 0.6cm on my plan.

How many metres will 1cm be? Thanks in advance (and apologies if this is really obvious; as I said, never could get my head round even the most simple maths).

EDIT:

Another quick question....

If I am making a scale ruler, whereby 10cm = 66m.

66m is a bit messy, how many cm would it be to make it a nice 70m?

You know you all love it!
Last edited by fender_696 at Apr 24, 2011,
#3
cross-multiplication, dude.


0.6 = 1
4 ___x
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Last edited by fearofthemark at Apr 24, 2011,
#8
First, you determine how many times 0.6cm goes into 1 cm -> 1:0.6 = 1.66667 (one and two-thirds).

Then, you multiply 4 by 1.66667, and you should have the right amount of metres in a cm.

EDIT: Ninja'd, but I have an explanation!
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#10
6.66m
edit- most of you are wrong. 6.66 is way cooler than 6.67(even though it will correctly round off to 6.67)
Last edited by dhruvrajvanshi at Apr 24, 2011,
#11
Quote by fearofthemark
cross-multiplication, dude.


0.6 = 1
4 ___x

THIS X 10000000. Howcome so many people can't cross-multiply correctly? You can use it for about EVERYTHING.
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#12
6.67

Like fearofthemark said, use cross-multiplication.
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#13
With some explanation, so you can do it on your own next time:

4 meters corresponds with 0.6 cm
Therefore:
0.6 cm / 0.6 cm = 1
So if you divide 4 meter bij 0.6 you`ll know how much meter 1 cm is on scale.
4 / 0.6 = 6 2/3 or 6.67 meter.

Math is not so difficult bro, just learn how to apply it in the correct form/shape each time
#14
Another quick question....

If I am making a scale ruler, whereby 10cm = 66m.

66m is a bit messy, how many cm would it be to make it a nice 70m?

You know you all love it!
#15
Quote by fender_696
Another quick question....

If I am making a scale ruler, whereby 10cm = 66m.

66m is a bit messy, how many cm would it be to make it a nice 70m?

You know you all love it!


cross-multiplication, dude.


10 = x
66 __70
or to make it simpler,

10 x 70 = 66x

700 = 66x

x = 700/66
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Last edited by fearofthemark at Apr 24, 2011,
#16
Quote by fender_696
Another quick question....

If I am making a scale ruler, whereby 10cm = 66m.

66m is a bit messy, how many cm would it be to make it a nice 70m?

You know you all love it!

Same concept:
66 70

10 x

X = 10 x 70/66 = calculate for yourself.

http://en.wikipedia.org/wiki/Cross-multiplication
Quote by PsiGuy60
Banned because f*ck you Hebriqui.
I'd been going for a month or so.


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oh **** you
#17
Sorted! Thanks again guys!

Well, you learn something new everyday....

Cross-multiplication, well, I never....