Answer:
A scale 1/10 inches represents 0.15 feet
Step-by-step explanation:
* Lets explain how to solve the problem
- The scale drawing is a ratio between the actual length and the
drawing length
- The terms of the ratio must have same units, then the scale
drawing must have same units
* Lets solve the problem
- The 15 feet on a scale drawing are represented by 10 inch
∵ 1 foot = 12 inches
∴ 15 feet = 15 × 12 = 180 inches
∵ 15 feet represented by 10 inches
∴ 180 inches represented by 10 inches
∴ The scale drawing is ⇒ 10 : 180
- Simplify it by dividing the two terms by 10
∴ The scale drawing is ⇒ 1 : 18
- That means every 1 inch in drawing represents 18 inches in actual
∵ A scale represents 1/10 inches
∴ 1 : 18
1/10 : ?
∴ The actual = 1/10 × 18 = 1.8
∴ 1/10 inches in scale drawing represents 1.8 inches in actual
∵ 1 inch = 1/12 feet
∴ The actual = 1.8 × 1/12 = 0.15 feet
* A scale 1/10 inches represents 0.15 feet
