Scale Drawings Flashcard

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or area that is proportionally reduced or enlarged to fit on paper, using a specific scale to indicate the relationship between the drawing and the actual size.

Front

What does the term '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. It indicates how much the drawing has been enlarged or reduced.

Front

If a flagpole is represented as 1 inch = 4 feet, how do you find the actual height of the pole if it measures 12 inches?

Back

Multiply the measurement in inches by the scale factor: 12 inches x 4 feet/inch = 48 feet.

Front

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

Back

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

Front

What is the actual length of a wall that appears as 3 cm on a scale drawing with a scale factor of 1:50?

Back

The actual length is 3 cm x 50 = 150 cm.

Front

How do you calculate the area of a rectangle in a scale drawing?

Back

To calculate the area, first convert the dimensions from the scale drawing to actual size using the scale factor, then use the formula Area = length x width.

Front

What is the actual area of a garden represented by a rectangle measuring 8 cm by 6 cm with a scale of 1 cm to 1 meter?

Back

The actual area is (8 cm x 1 m/cm) x (6 cm x 1 m/cm) = 8 m x 6 m = 48 square meters.

Front

If a classroom's actual dimensions are 12 meters by 15 meters, what are the dimensions in a scale drawing with a scale of 1 cm to 3 meters?

Back

The dimensions in the drawing would be (12 m / 3 m/cm) by (15 m / 3 m/cm) = 4 cm by 5 cm.

Front

How do you find the perimeter of a rectangular plot of land in a scale drawing?

Back

To find the perimeter, first convert the dimensions from the scale drawing to actual size, then use the formula Perimeter = 2(length + width).

Front

What is the perimeter of a rectangular plot measuring 3 cm by 5 cm on a scale of 1 cm to 30 meters?

Back

The actual dimensions are 3 cm x 30 m/cm = 90 m and 5 cm x 30 m/cm = 150 m. The perimeter is 2(90 m + 150 m) = 480 meters.