Question

A scale of a room in a blueprint is 3 in.:5 ft. A wall in the same blueprint is 18 in.

How long is the actual wall?
A window in the room has an actual width of 2.5 feet. Find the width of the window in the blueprint.

Answer 1

Length = 30cm Width= 20cm area = 600m

Explanation:

Find the number of meters represented by 1 centimeter in the drawing.

2 cm ÷ 2

5 m ÷ 2

=

1 cm

5

2

m

1 centimeter in this model is

5

2

meters in the actual room.

Find the width of the actual room labeled 8 centimeters in the drawing.

1 cm × 8

5

2

m × 8

=

8 cm

20 m

The width of the actual room labeled 8 cm is 20 m.

Find the length of the actual room labeled 12 centimeters in the drawing.

1 cm × 12

5

2

m × 12

=

12 cm

30 m

The length of the actual room is 30 m.

Since the area is length times width, the area of the actual room is 30 m × 20 m = 600 m2.

Answer 2

A scale of a room in a blueprint is 3 in.:5 ft. A wall in the same blueprint is 18 in. How long is the actual wall? 30 feet

A window in the room has an actual width of 2.5 feet. Find the width of the window in the blueprint. 1
`(1)/(2)`