G asked in Science & MathematicsMathematics · 4 years ago

# I want to draw a building that is 40 feet in length in 1:100 scale. Do I have to convert the 40 feet into meters?

I want to draw a building that is 40 feet in length in 1:100 scale. Do I have to convert the 40 feet into meters?

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• 4 years ago

No. You need to divide 40 feet by 100

40 / 100 = 4/10 = 2/5

So your drawing of the building will be 2/5 of a foot tall

12 * (2/5) = 24/5 = 4.8

4.8 inches tall, which is about 4 13/16 inches tall

• 4 years ago

Do not have to. Just easier. It is more usual to convert using X foot to inch or x mile to inch when dealing not-metric. You might see older topo maps or aerial photographs giving scale as an odd ratio like 1:63,360 (which is the same as1 inch=1 mile). The problem with 1:400 is that inches are not usually divided into tenths on rulers, and those triangular scale meter converter things (I have no idea what they are called) usually come in either metric or english for this very reason.

Of course, when dealing with a computer design program like CAD, it really doesn't matter. The computer does the hard work for you.

• Como
Lv 7
4 years ago

No.

Scale length = 40 x 1/100 = 2/5 = 0.4 ft

0.4 ft = 4.8 ins

• 4 years ago

.4 for each feet (40/100=.4)