scale drawings

Front

What is the scale factor in a scale drawing?

Back

The scale factor is the ratio of a length of the image to the corresponding length on the original figure.

Front

If a model is built at a scale of 3 in : 78.75 ft, how do you estimate the height of the actual object if the model is 2 ft tall?

Back

To estimate the height of the actual object, use the scale to set up a proportion: (2 ft / height of actual object) = (3 in / 78.75 ft). The estimated height is 630 ft.

Front

What is the actual length if a blueprint uses a scale of 3 cm = 4.5 m and the drawing measures 5 cm?

Back

To find the actual length, set up a proportion: (5 cm / actual length) = (3 cm / 4.5 m). The actual length is 7.5 m.

Front

How do you find the actual width of a window if a model is built using a scale of 5 in : 25 ft and the model window is 1.5 in wide?

Back

Set up a proportion: (1.5 in / actual width) = (5 in / 25 ft). The actual width is 7.5 ft.

Front

If the distance between two cities on a map is 4.125 inches and the scale is 2 inches = 40 miles, how do you find the actual distance?

Back

Set up a proportion: (4.125 in / actual distance) = (2 in / 40 miles). The actual distance is 82.5 miles.

Front

What does it mean when a drawing is to scale?

Back

A drawing is to scale when it accurately represents the proportions of the actual object, using a consistent ratio.

Front

What is a blueprint?

Back

A blueprint is a detailed architectural plan that uses a specific scale to represent the dimensions of a building or object.

Front

How do you convert a scale drawing measurement to actual size?

Back

To convert a scale drawing measurement to actual size, multiply the measurement by the scale factor.

Front

What is the purpose of using scale drawings?

Back

Scale drawings are used to represent large objects in a smaller, manageable size while maintaining accurate proportions.

Front

If a model of a car is built at a scale of 1:20, how long is the actual car if the model is 6 inches long?

Back

The actual car is 6 inches * 20 = 120 inches long.