how to find a scale for a scale drawing (easy)
To find the scale for a scale drawing, you need to know the ratio of the measurements on the drawing to the actual measurements of the object being drawn. Here is an easy way to find the scale:
1. Measure the length or width of the object you are drawing with a ruler or measuring tape.
2. Measure the length or width of the same object on the scale drawing.
3. Divide the length or width of the object by the length or width on the scale drawing to find the scale ratio.
4. Express the ratio as a fraction or a ratio (e.g. 1:100, 1/4) to represent the scale of the drawing.
For example, if the actual length of the object is 10 inches and the length on the scale drawing is 2 inches, the scale would be 10:2 or 10/2, which simplifies to 5:1 or 5/1. This means that 1 inch on the scale drawing represents 5 inches in real life.
what would be the scale for this example?
The scale for the example provided would be 5:1 or 5/1. This means that 1 inch on the scale drawing represents 5 inches in real life.
what if when you divide the length and width the answer has a remainder?
If the result of dividing the length or width of the object by the length or width on the scale drawing has a remainder, you can round the ratio to the nearest whole number or use a decimal approximation.
For example, if the actual length of the object is 11 inches and the length on the scale drawing is 2 inches, the ratio would be 11/2, which equals 5.5. This means that 1 inch on the scale drawing represents 5.5 inches in real life. You can round this to the nearest whole number to get a scale of 5:1 or you can use the decimal approximation of 5.5 to represent the scale.
how would i do this if the length on paper is 15 cm?
To determine the scale for a scale drawing where the actual length of the object is given in inches and the length on the scale drawing is given in centimeters, you will need to convert the units so they are consistent before finding the ratio.
Here's how you can do it:
1. Start by converting the actual length of the object into centimeters. Since 1 inch is equal to 2.54 centimeters, multiply the actual length (in inches) by 2.54 to convert it to centimeters.
2. Measure the length on the scale drawing, which is already in centimeters.
3. Divide the actual length (now in centimeters) by the length on the scale drawing to find the scale ratio.
4. Express the ratio as a fraction or a ratio to represent the scale of the drawing.
For example, if the actual length of the object is 10 inches, which is equal to 25.4 centimeters, and the length on the scale drawing is 15 cm, then you would divide 25.4 cm by 15 cm to get the scale ratio. This equals approximately 1.69. Therefore, the scale of the drawing would be approximately 1:1.69.
should perimeter on paper be less than perimeter in real life
No, the perimeter on paper should not be less than the perimeter in real life for a scale drawing. The perimeter of the scale drawing should accurately reflect the perimeter of the object in real life, even though the measurements are scaled down.
In a scale drawing, all measurements are proportionally reduced or enlarged to accurately represent the object being drawn. This means that the relationships between the measurements, including the perimeter, should be maintained in the scale drawing.
If the perimeter on the scale drawing is less than the perimeter in real life, it would mean that the drawing is not proportionally accurate and the scale is not correct. It is important to ensure that all measurements, including the perimeter, in the scale drawing accurately reflect the object in real life.