# [ASK] Minimum Dimension of a Map

#### Monoxdifly

The farthest distance of two places in an area is 200 km. If someone wants to make a map of that area on a 1 m × 1 m paper, the possible scale to make it is ....
a. 1 : 210
b. 1 : 2.100
c. 1 : 21.000
d. 1 : 210.000

Can you help? The 200 and 210 makes me think that the distance on map won't be an integer.

#### Debsta

MHF Helper
Firstly, are they decimal points in the answers (b) to (d)?

• topsquark

#### Monoxdifly

No. Sorry, forgot that dots represents decimals in international notation. The options are:
a. 1 : 210
b. 1 : 2,100
c. 1 : 21,000
d. 1 : 210,000

• topsquark

#### Debsta

MHF Helper
OK. Good.
You first need to convert 200km to metres.

• topsquark

#### Monoxdifly

Yes, it's 200,000 meters. Now what should I do?

#### Debsta

MHF Helper
Ok, so you want to represent a length of 200 000 metres on a piece of paper which is 1 metre wide.

How do you need to scale it down, so that it will fit on the page (and leave a bit of a margin)?

1 : 210,000?

#### Debsta

MHF Helper
Correct! You want to divide all real measurements by a bit more that 200 000 so it'll fit on the paper. Can you see why?

#### Monoxdifly

So that we have some little spaces to labels both ends of the line?

• Debsta
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