The length of a part in a drawing made at a scale of 1: 3 is 7.2 cm.

| May 6, 2021 | education

The length of a part in a drawing made at a scale of 1: 3 is 7.2 cm. What will be the length of this part in another drawing made at a scale of 3: 4?

Scale is the ratio of the length of the item in the drawing to the actual length of the item. That is, if the part is presented on a scale of 1: 3, this means that in reality the part is 3 times longer than that shown in the drawing. If the part in the drawing is 7.2 cm, then in reality it is 7.2 * 3 = 21.6 cm.In another drawing with a scale of 3: 4, the part in the drawing should be 3/4 of the length in reality. This means that in order to calculate the length of the part in the second drawing, the real length must be multiplied by 3/4. 3/4 is converted to 0.75. We get 21.6 * 0.75 = 16.2 cm.
Answer: 16.2 cm



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