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?
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
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