 # Length and Distance

## Length refers to the measurement of an object from one end to another, while distance is the space between two objects or points. The two systems used to measure length and distance are the English and metric systems.

###### 110,679 Questions
Units of Measure
Length and Distance

# What instrument measures length or distance?

It depends on the meaning of length. Typically it means a unit of distance but it can also be applied to the passage of time, such as the duration of a piece of music. Thus a time-piece, such as a stopwatch, would be the instrument of choice when measuring a length of time.

For units of distance, there are a huge number of instruments available:

• Calipers and micrometers
• Rulers and meter or yard sticks or line gauges
• tape measures,
• surveyor's wheels,
• micrometers,
• rangefinders
• laser rules.
• Walking wheels
• SONAR
• LIDAR

Which instrument you use largely depends on how accurate the result needs to be (the tolerance), combined with the size of the object or the distance being measured. Generally, the greater the distance, the greater the tolerance.

Measuring tapes are more flexible than straightedge rulers and can accurately measure much greater distances, typically up to 10m. Today, they are made from cloth or fiberglass (such as a tailor's measure) or from a stiff, curved metallic ribbon that can retract into a coil (such as a carpenter's or constructor's measure). Surveyor's tapes are often made from durable plastic or fiberglass and allow more accurate measuring over much greater distances, usually up to 100m or more.

Micrometers are used when measuring the size of distant objects. Modern micrometers are often GPS-based systems used to perform geodetic measurements.

Micrometers and calipers are generally used in engineering applications where straightedge rulers would be impractical, such as when measuring the diameter of a column or when measuring the gauge of a threaded bolt.

Laser rulers are a new type of measuring device, designed to specifically measure the distance to an object, where a laser beam can be reflected back to the device. Handheld devices are generally low-power devices so their accuracy is limited to within 100m or so, but more powerful lasers can measure greater distances, including the distance to the moon (where reflectors were specifically placed during the moon landings in the late 60's and early 70's).

In microscopes, there is commonly a glass slide marked with an engraving that goes down to a few microns (micrometer scale). The glass slide with the engraved lines is known as a graticule or reticule).

To measure distance traveled, a pedometer is carried by walkers to measure distance walked. An Odometer is fitted to vehicles, including bicycles, to measure distances traveled (miles or kilometers).

You may use a ruler.

Examples of common instruments used for measuring length are the ruler, (for measuring milimeters, centimeters, inches, and 1 foot), the yardstick, (which is 3 feet long, [36 inches], and measures milimeters, centimeters, inches, and about 1 meter, {3.28084 feet}). There are also tape measurers that can measure all of the previously listed measurements and vary on the longest length they can measure. Units of length are based on feet or meters. Tools for measuring length range from simple rulers to lasers. A ruler
I would say a ruler or a tape measure.

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Exercise
Length and Distance

# How far is 10,000 steps?

It varies based on stride length, but 10,000 steps is generally about 5 miles of walking. If that sounds like a lot, don't worry—recent research has questioned whether 10,000 steps a day is actually the best health goal.

It turns out this "guideline" was originally a marketing tactic. In 1965, a Japanese company named their pedometers what translates to "the 10,000 step meter”—perhaps because the Japanese character for “10,000” resembles a person walking—and the idea spread from there.

Steps aren’t as much of a measure of a healthy lifestyle as general activity levels. CDC's current exercise recommendations for adults are 150 minutes of moderately intense activity per week, with activities that strengthen muscles at least two days per week.

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Math and Arithmetic
New Jersey
Track and Field
Length and Distance

# How many miles are in a 3K race?

Since 1 kilometer is 0.62 miles, 3K is 1.86 miles.

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Math and Arithmetic
New Jersey
Length and Distance

# How many miles are in a 8K race?

8K is equal to 5 miles.

Actually, to be exact 8K is equal to 4.97 miles.

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Math and Arithmetic
Units of Measure
Length and Distance

# How many feet are there in a mile?

There are 5,280 feet in one mile.

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Units of Measure
Length and Distance

# How many miles are equal to 5 kilometers?

5 km is exactly 3.10685596 miles (don't forget that extra .00685596 of a mile, it could cost you the race).

That comes out to be 3 miles + 564 feet + 2.4 inches.

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Math and Arithmetic
Algebra
Length and Distance

# Decrease 20 cm by 20 mm?

First convert to the same unit (1 cm = 10 mm). Then do the subtraction.

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Math and Arithmetic
Area
Length and Distance

# How many square feet is one acre?

The area of one acre is 43,560 square feet, but there are an

infinite number of different shapes and dimensions an acre could have.

Here are a few examples:

Square: 208.71 feet on a side (approx.)

Rectangles:

9' x 4840'

10' x 4356'

12' x 3630'

20' x 2178'

24' x 1815'

40' x 1089'

60' x 726'

72' x 605'

120' x 363'

121' x 360'

180' x 242'

Circle: 235.5-ft diameter (approx.)

All 13 of these examples have areas of 1 acre.

One Acre = 43560 sq ft

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Exercise
Math and Arithmetic
New Jersey
Length and Distance

# How many miles are 10000 steps?

Depends on how tall you are. I am about 5 feet 8 inches, and each step averages to 40 cm from toe to toe. That means that for me, each step is 0.4 meters. 1 km = 4000 steps, 1 mile = 6435 steps. They say you should take 10,000 steps per day. For me that would equal to 2.5 km or 1.6 miles. It's basically equal to a 1 hour walk assuming 100 steps per minute are taken. Every 15 seconds, I take 26 steps. 3 km/ hour, 4.15 calories per minute for 160 lbs. To get the benefits of physical activity, you must expend 700 to 800 calories in physical work. Three 1-hour walks would do that.

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Units of Measure
Length and Distance

# How many centimetres are there in 8.5 inches?

21.59 centimeters.

Solution:

1. 2.54 centimeters = 1 inch. You can express this as the fraction 2.54 cm / 1 inch (read aloud as "2.54 centimeters per inch")

2. To convert 8.5 inches to centimeters, cancel the inches in the numerator and denominator & multiple 2.54 * 8.5 = 21.59 cm (see below. Note: Disregard the _ character. It is only included to make the fractions align properly for easier viewing.

2.54 cm__8.5 inches___ 21.59 cm

--------- * ----------- = ----------- = 21.59 cm

1 inch_______1__________1

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Distances and Travel Times
Math and Arithmetic
Units of Measure
Length and Distance

# 50 000 meters how many km?

1km = 1000 metres

Therefore 50,000 m = 50KM

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Math and Arithmetic
Algebra
Length and Distance

# 18 feet equals how many meters?

First, convert foot into meters

1 foot = 0.3048 meters

18 feet in meters = 18 x 0.3048 = 5.4864 meters

or 18 feet = 5.48 meters

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Exercise
Length and Distance

# How long does it take to walk 5.5 km?

Depends on how fast you walk.

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Units of Measure
Length and Distance

# Is 13 cm or 13 mm greater?

The problem here is that you don't know what cm and mm are.

cm is centimetre, which is one-hundredth of a metre

mm is millimetre, which is one-thousandth of a metre

The world outside the USA spells metre differently from, for example, a parking meter, because they are completely different. Americans spell metre "meter" good luck with that.

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Units of Measure
Length and Distance

# How many meters are in one kilometer?

There are 1000 meters in a kilometer.

The prefix kilo- means "1000".

Examples:

• kilogram is one thousand grams
• kilohertz is one thousand oscillations per second
• kilovolt is one thousand volts
• kilobyte is roughly one thousand bytes of storage (used because 210, or 1024, is the power of two closest to 1000 bytes: it is easily close enough to one thousand, or one kilo-, for describing computer storage in general terms).
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Math and Arithmetic
Algebra
Length and Distance

# Which is greater 36 yards 2 feet and 114 feet 2 inch?

114 feet and 2 inches. It takes 3 feet to equal 1 yard, therefore 36 yards plus 2 feet equals 110 feet

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Math and Arithmetic
Length and Distance

# How many ft equals 43 inches?

43 inches = 3.5833... feet or 3 feet 7 inches

12 inches = 1 foot

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Math and Arithmetic
Algebra
Length and Distance

# How many yards equal 134 meters?

There are 0.9144 metres in one yard. Therefore, rounded to two decimal places, 134 metres is equal to 134/0.9144 = 146.54 yards.

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Length and Distance

# How far is 2000 meters?

200,000cm 2,000,000mm 2km

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Math and Arithmetic
Units of Measure
Length and Distance

# How many inches does 450 mm equal?

Divide the millimeters by 25.4 to convert to inches.

Direct Conversion Formula

450 mm*

1 in

25.4 mm

=

17.71653543 in

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Math and Arithmetic
Algebra
Length and Distance

# 5.9ft equals to how many cm?

179.832 centimeters. Complete algebraic steps are below:

5.9 feet*12 inches

1 feet*2.54 centimeters

1 inches=179.832 centimeters

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Math and Arithmetic
Marathon
Length and Distance

# How many miles if a half marathon?

ugh = sub the mr beast

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