Scale 1 cm : 4 m, 10 m in real life

Step by step, with the reason for every step · Scale drawings and maps · Geometry

Step by step

Question: with the scale 1 cm : 4 m, how long is 10 m in real life on the map?

map → real

The scale means: 1 cm on the map is 4 m for real.

1 cm → 4 m

10 m is how many times 4 m?

10 divided by 4 is 2.5.

10 ÷ 4 = 2.5

So it is 2.5 times the scale.

The map length is 2.5 times 1 cm too.

2.5 × 1 cm → 10 m

So on the map it is 2.5 cm.

2.5 cm → 10 m

Let's check: go back.

2.5 times 4 should give the real length, 10.

2.5 × 4 = 10

We get it again.

So 2.5 cm is right!

Let's look back.

First: how many times.

Last: check.

Answer

2.5 cm → 10 m

Try this one yourself, then check:

Scale 1 cm : 2 m. 13 m in real life: on the map?

Show the answer

6.5 cm