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Maksim231197 [3]
3 years ago
9

On a blueprint, the scale indicates that 7 cm represent 16 ft. What is the length of a room that is 9.8 cm long and 5 cm wide on

the blueprint?
Mathematics
2 answers:
Ira Lisetskai [31]3 years ago
3 0
The room is 22.4 feet long

7cm=16ft
9.8cm=?ft

  7cm       9.8cm
______=______
  16ft          x ft

Cross multiply
7x=156.8
divide both sides by 7
x=22.4 ft


Ksenya-84 [330]3 years ago
3 0

Answer:

The length of a room that is 9.8 cm long and 5 cm wide on the blueprint is:

22.4 ft. long and 11.43 ft. wide

Step-by-step explanation:

On a blueprint, the scale indicates that 7 cm represent 16 ft.

  1 cm represents 16/7 ft.

9.8 cm represents

\dfrac{16\times 9.8}{7}\\\\=22.4ft.

5 cm represents

 \dfrac{16\times 5}{7}\\\\=11.43ft.

Hence,  the length of a room that is 9.8 cm long and 5 cm wide on the blueprint is:

22.4 ft. long and 11.43 ft. wide

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