On a blueprint, the scale says that 2 cm represents 3 m. What is the actual length of a wall if its measurement on the blueprint

Question

3 years ago

14

is 7 cm?

2 answers:

VashaNatasha [74] · Answer 1 · 2022-08-20T17:27:02+03:00

7 0

Answer:

10.5 metres

Step-by-step explanation:

2 cm is equal to 3m

1 cm is equal to 1.5 m

7 cm is equal to 1.5 x 7 m which is 10.5 metres.

Leokris [45] · Answer 2 · 2022-08-20T15:25:13+03:00

Answer:

The actual length of the wall is 10.5 m

Step-by-step explanation:

Write and solve an equation of ratios to answer this question:

2 cm 3 m

--------- = ---------

7 cm L

Solve this for L by inverting both sides:

7cm L

---------- = --------

2 cm 3 m

and then multiplying both sides by 3m:

21

----- = L

2

The actual length of the wall is 10.5 m