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Zina [86]
3 years ago
12

John needs to produce a scale diagram of a bedroom using a scale of 1:40. The length of the room is 3.4 metres. What is the leng

th on the diagram? _____ cm
Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
5 0

Answer:

8.5cm

Step-by-step explanation:

convert 3.4metres to cm that is by multiplying by 100

3.4×100=340cm

1rep 40

?rep 340

that is 340/40

=8.5cm

Yuki888 [10]3 years ago
5 0

Answer:

8.5 cm

Step-by-step explanation:

Scale = 1:40

Length of the room = 3.4 meters

3.4 meters =3.4 X 100 =340 cm

Since 1 unit on the diagram represents 40 units

The length of the diagram

=\dfrac{340}{40}\\\\=8.5$ cm

The length of the room on the diagram is 8.5 cm.

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Answer:

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Step-by-step explanation:

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2 years ago
Read 2 more answers
Which of the following equations can be used to find the length of EF in the
Vinil7 [7]

The equation which can be used to find the length of EF is option A which is  EF=\sqrt{24^{2} -12^{2} }.

Given the length of base of right angled triangle is 12 and the hypotenuse be 24.

We are to find the length of EF and tell which equation can be used to find the length of EF.

We know that pythagoras theorem applies in a right angled triangle.

Pythagoras theorem says that in a right angled triangle the square of the hypotenuse is equal to the sum of square of base and perpendicular.

H^{2} =B^{2} +P^{2}

In this triangle we are only given base and hypotenuse and we have to find EF which is perpendicular.

(DE)^{2} =(EF)^{2} +(DF)^{2}

EF=\sqrt{DE^{2}-DF^{2}  }

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=\sqrt{576-144}

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Hence the equation which can be used to find the length of Ef is option A which is  EF=\sqrt{24^{2} -12^{2} }.

Question is incomplete as it should include the figure also.

Learn more about pythagoras theorem at brainly.com/question/343682

#SPJ1

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2 years ago
If it takes (a) men (b) hours to dig (c) holes, how many men are required to dig b holes in c hours?
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So          c  =  (a b² / c)  /  x

           x c  =  (a b² / c)

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Now, I lost the big overview while I was doing that,
and just started following my nose through the fog.
So I have to admit that I'm not that confident in the answer.
But gosh durn it.  That's the answer I got, and I'm stickin to it.
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3 years ago
Molly can read four-fifths of a page in the time it takes kayla to read one page. how many pages will kayla read in the time it
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Kaila will read 1 page and 2 fifths
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