Scale & Scale Drawings

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or space that is proportionally reduced or enlarged to fit a specific scale.

Front

What does scale factor mean?

Back

The scale factor is the ratio of a length in a scale drawing to the corresponding length in the actual object.

Front

If a scale drawing has a scale of 1 cm : 10 m, what does this mean?

Back

This means that 1 centimeter on the drawing represents 10 meters in reality.

Front

How do you calculate the actual distance using a map scale?

Back

Multiply the distance on the map by the scale factor to find the actual distance.

Front

What is the scale factor from a smaller triangle to a larger triangle if the smaller triangle's side is 3 cm and the larger triangle's corresponding side is 6 cm?

Back

The scale factor is 2.

Front

If a rectangle's perimeter is 40 cm and is enlarged by a scale factor of 3, what is the new perimeter?

Back

The new perimeter is 120 cm.

Front

What is the actual length of a lawn that is 4 cm long in a drawing with a scale of 1 cm : 2 m?

Back

The actual length of the lawn is 8 m.

Front

What is the formula to find the new perimeter after scaling?

Back

New Perimeter = Original Perimeter × Scale Factor.

Front

If a drawing of a room is made to a scale of 1 inch : 4 feet, how long is a 3-inch drawing of a table in reality?

Back

The actual length of the table is 12 feet.

Front

What is the relationship between scale factor and area?

Back

If the scale factor is k, the area of the scaled object is k² times the area of the original object.