A Round Plate $14$ In in Diameter Is to Have Ten Holes Drilled Through

question 23

Multiple Choice

A round plate $14$ in. in diameter is to have ten holes drilled through it. This is accomplished by creating a drawing for half the circle and the then "mirroring" the drawing for the other half of the circle. The $\frac { 1 } { 2 }$ in. diameter holes are to be equally spaced on a $10$ in. concentric circle in the top half of the plate. What is the angle A between the holes? What is the angle B between the horizontal and each of the end holes?

• A) A = \(36\) °, B = \(30\) °
• B) A = \(72\) °, B = \(36\) °
• C) A = \(60\) °, B = \(30\) °
• D) A = \(60\) °, B = \(18\) °
• E) A = \(36\) °, B = \(18\) °

---

Definitions:

Extra Costs

Expenses that are not anticipated, often occurring outside of normal or planned operating expenses.

Scarce Resources

Resources that are limited in supply, which can lead to competition for their use or access.

Economic Wants

Economic wants are desires that can be satisfied through the consumption of goods and services, which are often influenced by factors such as income, taste, and cultural trends.

Maximum Satisfaction

The highest level of satisfaction or utility achieved by a consumer through the consumption of goods and services.