Question

question

Answer 1

@AZ

Answer 2

Our scale is 1 inch to 2.5 inches

This basically means: if we draw something that is 1 inches, that the actual object is 2.5 inches

Answer 3

16 times 2.5 is 40, so the width would be 40

Answer 4

They give you the width is 16 inches and want to know how much the actual size is

Answer 5

but they didn't give the length

Answer 6

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
16 times 2.5 is 40, so the width would be 40
\(\color{#0cbb34}{\text{End of Quote}}\)
Please refrain from giving direct answers.

Answer 7

\(\color{#0cbb34}{\text{Originally Posted by}}\) @AZ
They give you the width is 16 inches and want to know how much the actual size is
\(\color{#0cbb34}{\text{End of Quote}}\)
so how do you find the actual size

Answer 8

welll, i didn't give a direct answer

Answer 9

Remember what we've been doing so far? We have to make a proportion

1 inch is actually 2.5 inches
16 inches is actually ??? inches

Answer 10

1/2.5=16/x, that would be the proportion

Answer 11

Yes!!

Answer 12

Oh wait you're not the person who asked the question haha

Answer 13

lol

Answer 14

and then multiply each side by x, which would result in x/2.5 = 16
then multiply 16 by 2.5 to separate the x

Answer 15

which is 40

Answer 16

az can you explain

Answer 17

lol

Answer 18

sure

let's forget about all the units since they're all the same

do you know why scale drawings are important? We want everything to be in that same proportion so like imagine if I was an artist and I was drawing a house like this:



Doesn't that front door look really funny? It's way too big for a house

Answer 19

so we use proportions to keep everything the size that it should be

imagine you're drawing a person, if you draw their nose to be twice the size then it'll just look funny, right?

so when you're trying to keep all the ratios the same, we want to keep it consistent

Answer 20

yeah

Answer 21

So in your question, if the actual length is 2.5
then we draw it as 1

Answer 22

and that way everything will look correct

Answer 23

So we use proportions to do that

So
draw it with a length of 1 if the actual size is 2.5

and then your question says
we drew it as 16 inches, so what is the actual size?

Answer 24

40 inches

Answer 25

And here we have a proportion now

\(\dfrac{1}{2.5} = \dfrac{16}{x}\)

and we solve for this 'x'

Answer 26

And that's correct!

Answer 27

So now they're telling us the actual height and want us to calculate what we draw it as

So we have

\(\dfrac{1}{2.5} = \dfrac{y}{15}\)

Answer 28

ok

Answer 29

cross multiply it just like how you've been doing

Answer 30

\(\color{#0cbb34}{\text{Originally Posted by}}\) @AZ
cross multiply it just like how you've been doing

Created with RaphaëlReply Using Drawing
\(\color{#0cbb34}{\text{End of Quote}}\)
congrats - good job - explained like a math teacher - suppose you r a math teacher really ...!