Another use of "How long..." (How + Adjectives)How wide - How deep - How long
"How long"
is also used with the verbs "is" and "are" to know the
length of something. Look at the examples:
Example: How long is the pipeline?

Other adjectives used with "How":
How
wide is the bed? = What is the
width of the bed?

How
deep...? = What is the
depth of...?

How
big...? = What is the
size of...?
How
tall...? = What is the
height of...?
How
far...? = What is the
distance...?
How
high...? = What is the
height of...?
How do we measure length? In the USA, we still use inches, feet, yards, and miles:
1 inch = 2.54 cm
1 foot = 30.48 cm
1 yard = 914 cm
1 mile = 1.6 km
Asking questions, example: Wide:
The bed is 64 inches wide.
Question:
How wide is the bed?Tall:
Type the question! Answer:
He is 6 feet 11 inches.
Type the question:
Note: When we speak about objects, buildings, for example, we can ask "How high is it?", but it is
not possible to ask "how high" a person is when speaking about dimensions. We use a a different adjective beginning with a "t"!